diff --git a/src/pugixml.cpp b/src/pugixml.cpp
index 01ef4cb..346a326 100644
--- a/src/pugixml.cpp
+++ b/src/pugixml.cpp
@@ -207,12 +207,14 @@ namespace pugi
 			return (find == 1 && *dst == 0 && *src == 0);
 		}
 
+#ifdef PUGIXML_WCHAR_MODE
 		// Convert string to wide string, assuming all symbols are ASCII
 		void widen_ascii(wchar_t* dest, const char* source)
 		{
 			for (const char* i = source; *i; ++i) *dest++ = *i;
 			*dest = 0;
 		}
+#endif
 	}
 }
 
diff --git a/tests/test_deprecated.cpp b/tests/test_deprecated.cpp
index 09509bf..8565f96 100644
--- a/tests/test_deprecated.cpp
+++ b/tests/test_deprecated.cpp
@@ -110,6 +110,7 @@ TEST_XML(dom_node_child_value_w, "<node><novalue/><child1>value1</child1><child2
 
 	CHECK_STRING(node.child_value_w(STR("c*[23456789]")), STR("value2"));
 	CHECK_STRING(node.child_value_w(STR("*")), STR("")); // child_value(name) and child_value_w(pattern) do not continue the search if a node w/out value is found first
+	CHECK_STRING(node.child_value_w(STR("nothing*here")), STR(""));
 }
 
 TEST_XML(dom_node_find_child_by_attribute_w, "<node><child1 attr='value1'/><child2 attr='value2'/><child2 attr='value3'/></node>")