diff --git a/include/conversion.h b/include/conversion.h
index 8c06191..33ad9c8 100644
--- a/include/conversion.h
+++ b/include/conversion.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef CONVERSION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define CONVERSION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <string>
 #include <sstream>
 
@@ -36,3 +40,5 @@ namespace YAML
 	template <>
 	bool Converter<std::wstring>::Convert(const std::string& input, std::wstring& output);
 }
+
+#endif // CONVERSION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/crt.h b/include/crt.h
index 5c6f96a..667b60a 100644
--- a/include/crt.h
+++ b/include/crt.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef CRT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define CRT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 // for detecting memory leaks
 #ifdef _DEBUG
 
@@ -9,3 +13,5 @@
 
 #endif // _DEBUG
 
+
+#endif // CRT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/emitter.h b/include/emitter.h
index dce2666..c3c284a 100644
--- a/include/emitter.h
+++ b/include/emitter.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "emittermanip.h"
 #include "ostream.h"
 #include <memory>
@@ -84,3 +88,5 @@ namespace YAML
 		return emitter.SetLocalIndent(indent);
 	}
 }
+
+#endif // EMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/emittermanip.h b/include/emittermanip.h
index 22e5fd3..2dd83b5 100644
--- a/include/emittermanip.h
+++ b/include/emittermanip.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <string>
 
 namespace YAML
@@ -82,3 +86,5 @@ namespace YAML
 		return _Comment(content);
 	}
 }
+
+#endif // EMITTERMANIP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/exceptions.h b/include/exceptions.h
index b70c82a..6c533ca 100644
--- a/include/exceptions.h
+++ b/include/exceptions.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "mark.h"
 #include <exception>
 #include <string>
@@ -129,3 +133,5 @@ namespace YAML
 		: Exception(Mark::null(), msg_) {}
 	};
 }
+
+#endif // EXCEPTIONS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/iterator.h b/include/iterator.h
index 3dbd9ee..bb9141f 100644
--- a/include/iterator.h
+++ b/include/iterator.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 namespace YAML
 {
 	class Node;
@@ -28,3 +32,5 @@ namespace YAML
 		IterPriv *m_pData;
 	};
 }
+
+#endif // ITERATOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/mark.h b/include/mark.h
index 46d1245..7c3dfb3 100644
--- a/include/mark.h
+++ b/include/mark.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 namespace YAML
 {
 	struct Mark {
@@ -14,3 +18,5 @@ namespace YAML
 		Mark(int pos_, int line_, int column_): pos(pos_), line(line_), column(column_) {}
 	};
 }
+
+#endif // MARK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/node.h b/include/node.h
index 3ae77c3..587c707 100644
--- a/include/node.h
+++ b/include/node.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "conversion.h"
 #include "exceptions.h"
 #include "iterator.h"
@@ -95,3 +99,5 @@ namespace YAML
 }
 
 #include "nodeimpl.h"
+
+#endif // NODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/nodeimpl.h b/include/nodeimpl.h
index 268176f..31ebbf7 100644
--- a/include/nodeimpl.h
+++ b/include/nodeimpl.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef NODEIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODEIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 namespace YAML
 {
 	// implementation of templated things
@@ -63,3 +67,5 @@ namespace YAML
 		return GetValue(std::string(key));
 	}
 }
+
+#endif // NODEIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/noncopyable.h b/include/noncopyable.h
index 2ae4c68..577b547 100644
--- a/include/noncopyable.h
+++ b/include/noncopyable.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef NONCOPYABLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NONCOPYABLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 namespace YAML
 {
 	// this is basically boost::noncopyable
@@ -14,3 +18,5 @@ namespace YAML
 			const noncopyable& operator = (const noncopyable&);
 		};
 }
+
+#endif // NONCOPYABLE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/ostream.h b/include/ostream.h
index 4936c44..a5912bb 100644
--- a/include/ostream.h
+++ b/include/ostream.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef OSTREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define OSTREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <string>
 
 namespace YAML
@@ -30,3 +34,5 @@ namespace YAML
 	ostream& operator << (ostream& out, const std::string& str);
 	ostream& operator << (ostream& out, char ch);
 }
+
+#endif // OSTREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/parser.h b/include/parser.h
index 78ad52c..0ccea84 100644
--- a/include/parser.h
+++ b/include/parser.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <ios>
 #include <string>
 #include <vector>
@@ -40,3 +44,5 @@ namespace YAML
 		ParserState m_state;
 	};
 }
+
+#endif // PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/parserstate.h b/include/parserstate.h
index f8eb97f..1f27a7f 100644
--- a/include/parserstate.h
+++ b/include/parserstate.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef PARSERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define PARSERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <string>
 #include <map>
 
@@ -18,3 +22,5 @@ namespace YAML
 		std::string TranslateTag(const std::string& handle) const;
 	};
 }
+
+#endif // PARSERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/stlemitter.h b/include/stlemitter.h
index 5caa872..c2f86ff 100644
--- a/include/stlemitter.h
+++ b/include/stlemitter.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <vector>
 #include <list>
 #include <map>
@@ -36,3 +40,5 @@ namespace YAML
 		return emitter;
 	}
 }
+
+#endif // STLEMITTER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/include/yaml.h b/include/yaml.h
index b17868e..0f91428 100644
--- a/include/yaml.h
+++ b/include/yaml.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "crt.h"
 #include "parser.h"
 #include "node.h"
@@ -7,3 +11,5 @@
 #include "emitter.h"
 #include "stlemitter.h"
 #include "exceptions.h"
+
+#endif // YAML_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/aliascontent.h b/src/aliascontent.h
index 55460d7..e19f1d1 100644
--- a/src/aliascontent.h
+++ b/src/aliascontent.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef ALIASCONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define ALIASCONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "content.h"
 
 namespace YAML
@@ -33,3 +37,5 @@ namespace YAML
 		Content* m_pRef;
 	};
 }
+
+#endif // ALIASCONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/content.h b/src/content.h
index 5bb7ffa..b9cd311 100644
--- a/src/content.h
+++ b/src/content.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef CONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define CONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <vector>
 #include <map>
 #include "parserstate.h"
@@ -47,3 +51,5 @@ namespace YAML
 	protected:
 	};
 }
+
+#endif // CONTENT_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/emitterstate.h b/src/emitterstate.h
index 1edfa54..fbabe81 100644
--- a/src/emitterstate.h
+++ b/src/emitterstate.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "setting.h"
 #include "emittermanip.h"
 #include <cassert>
@@ -193,3 +197,5 @@ namespace YAML
 		}
 	}
 }
+
+#endif // EMITTERSTATE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/emitterutils.h b/src/emitterutils.h
index 72b30ad..eb99c6c 100644
--- a/src/emitterutils.h
+++ b/src/emitterutils.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef EMITTERUTILS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITTERUTILS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "ostream.h"
 #include <string>
 
@@ -16,3 +20,5 @@ namespace YAML
 		bool WriteAnchor(ostream& out, const std::string& str);
 	}
 }
+
+#endif // EMITTERUTILS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/exp.h b/src/exp.h
index 12bd6ac..1c36cb3 100644
--- a/src/exp.h
+++ b/src/exp.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef EXP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EXP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "regex.h"
 #include <string>
 #include <ios>
@@ -72,3 +76,5 @@ namespace YAML
 		const char FoldedScalar = '>';
 	}
 }
+
+#endif // EXP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/indentation.h b/src/indentation.h
index b21412b..2e2c967 100644
--- a/src/indentation.h
+++ b/src/indentation.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef INDENTATION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define INDENTATION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "ostream.h"
 #include <iostream>
 
@@ -28,3 +32,5 @@ namespace YAML
 	}
 }
 
+
+#endif // INDENTATION_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/iterpriv.h b/src/iterpriv.h
index ec38617..d091fbc 100644
--- a/src/iterpriv.h
+++ b/src/iterpriv.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef ITERPRIV_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define ITERPRIV_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "ltnode.h"
 #include <vector>
 #include <map>
@@ -23,3 +27,5 @@ namespace YAML
 		std::map <Node *, Node *, ltnode>::const_iterator mapIter;
 	};
 }
+
+#endif // ITERPRIV_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/ltnode.h b/src/ltnode.h
index 958d0ac..c1672de 100644
--- a/src/ltnode.h
+++ b/src/ltnode.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef LTNODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define LTNODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 namespace YAML
 {
 	class Node;
@@ -8,3 +12,5 @@ namespace YAML
 		bool operator()(const Node *pNode1, const Node *pNode2) const;
 	};
 }
+
+#endif // LTNODE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/map.h b/src/map.h
index 71da430..d5b4b31 100644
--- a/src/map.h
+++ b/src/map.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef MAP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define MAP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "content.h"
 #include <map>
 
@@ -36,3 +40,5 @@ namespace YAML
 		node_map m_data;
 	};
 }
+
+#endif // MAP_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/regex.h b/src/regex.h
index 4152212..59a4833 100644
--- a/src/regex.h
+++ b/src/regex.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <vector>
 #include <string>
 
@@ -57,3 +61,5 @@ namespace YAML
 }
 
 #include "regeximpl.h"
+
+#endif // REGEX_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/regeximpl.h b/src/regeximpl.h
index f2daa43..a17d76c 100644
--- a/src/regeximpl.h
+++ b/src/regeximpl.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef REGEXIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define REGEXIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "stream.h"
 #include "stringsource.h"
 #include "streamcharsource.h"
@@ -170,3 +174,5 @@ namespace YAML
 		return offset;
 	}
 }
+
+#endif // REGEXIMPL_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/scalar.h b/src/scalar.h
index 3b06684..59bcb7b 100644
--- a/src/scalar.h
+++ b/src/scalar.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef SCALAR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define SCALAR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "content.h"
 #include <string>
 
@@ -32,3 +36,5 @@ namespace YAML
 		std::string m_data;
 	};
 }
+
+#endif // SCALAR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/scanner.h b/src/scanner.h
index ffe1d5e..36aa917 100644
--- a/src/scanner.h
+++ b/src/scanner.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef SCANNER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define SCANNER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <ios>
 #include <string>
 #include <queue>
@@ -94,3 +98,5 @@ namespace YAML
 		std::map <std::string, const Node *> m_anchors;
 	};
 }
+
+#endif // SCANNER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/scanscalar.h b/src/scanscalar.h
index ee66213..319a428 100644
--- a/src/scanscalar.h
+++ b/src/scanscalar.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef SCANSCALAR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define SCANSCALAR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <string>
 #include "regex.h"
 #include "stream.h"
@@ -33,3 +37,5 @@ namespace YAML
 
 	std::string ScanScalar(Stream& INPUT, ScanScalarParams& info);
 }
+
+#endif // SCANSCALAR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/sequence.h b/src/sequence.h
index 034e8dc..c7e0828 100644
--- a/src/sequence.h
+++ b/src/sequence.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef SEQUENCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define SEQUENCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "content.h"
 #include <vector>
 
@@ -39,3 +43,5 @@ namespace YAML
 		std::vector <Node *> m_data;
 	};
 }
+
+#endif // SEQUENCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/setting.h b/src/setting.h
index c67e951..5619c59 100644
--- a/src/setting.h
+++ b/src/setting.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef SETTING_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define SETTING_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <memory>
 #include <vector>
 #include "noncopyable.h"
@@ -95,3 +99,5 @@ namespace YAML
 		setting_changes m_settingChanges;
 	};
 }
+
+#endif // SETTING_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/stream.h b/src/stream.h
index dd5add9..5d78551 100644
--- a/src/stream.h
+++ b/src/stream.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef STREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define STREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "noncopyable.h"
 #include "mark.h"
 #include <deque>
@@ -72,3 +76,5 @@ namespace YAML
 		return _ReadAheadTo(i);
 	}	
 }
+
+#endif // STREAM_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/streamcharsource.h b/src/streamcharsource.h
index d8368ac..10debc8 100644
--- a/src/streamcharsource.h
+++ b/src/streamcharsource.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef STREAMCHARSOURCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define STREAMCHARSOURCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "noncopyable.h"
 #include <cstddef>
 
@@ -38,3 +42,5 @@ namespace YAML
 		return source;
 	}
 }
+
+#endif // STREAMCHARSOURCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/stringsource.h b/src/stringsource.h
index 4b892fe..c4e4c13 100644
--- a/src/stringsource.h
+++ b/src/stringsource.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef STRINGSOURCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define STRINGSOURCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include <cstddef>
 
 namespace YAML
@@ -32,3 +36,5 @@ namespace YAML
 		std::size_t m_offset;
 	};
 }
+
+#endif // STRINGSOURCE_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/src/token.h b/src/token.h
index 6fae451..3c5fb58 100644
--- a/src/token.h
+++ b/src/token.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef TOKEN_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define TOKEN_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+
 #include "mark.h"
 #include <ios>
 #include <string>
@@ -67,3 +71,5 @@ namespace YAML
 		std::vector <std::string> params;
 	};
 }
+
+#endif // TOKEN_H_62B23520_7C8E_11DE_8A39_0800200C9A66
diff --git a/yaml-reader/tests.h b/yaml-reader/tests.h
index 20ec4d3..19054a0 100644
--- a/yaml-reader/tests.h
+++ b/yaml-reader/tests.h
@@ -1,3 +1,8 @@
+#pragma once
+
+#ifndef TESTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define TESTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
 #include <string>
 
 namespace YAML { class Emitter; }
@@ -76,3 +81,5 @@ namespace Test {
 		void UnexpectedValue(YAML::Emitter& out, std::string& desiredError);
 	}
 }
+
+#endif // TESTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66