diff --git a/src/pugixml.hpp b/src/pugixml.hpp
index 9f7c3fb..929817e 100644
--- a/src/pugixml.hpp
+++ b/src/pugixml.hpp
@@ -941,7 +941,7 @@ namespace pugi
 	private:
 		char_t* _buffer;
 
-		char _memory[192];
+		char _memory[192+64];
 		
 		// Non-copyable semantics
 		xml_document(const xml_document&);