diff --git a/include/nodereadimpl.h b/include/nodereadimpl.h
index 5beaa09..1ea7cf3 100644
--- a/include/nodereadimpl.h
+++ b/include/nodereadimpl.h
@@ -38,12 +38,12 @@ namespace YAML
 		struct flag { char c[2]; };
 		flag Convert(...);
 		
-		char (& operator,(flag, flag) )[1];
+		int operator,(flag, flag);
 		
 		template<typename T>
 		void operator,(flag, T const&);
 		
-		char (& operator,(char(&)[1], flag) )[1];
+		char operator,(int, flag);
 	}
 
 	template <typename T>
diff --git a/yaml-reader.vcproj b/yaml-reader.vcproj
index 84ad1d3..0e550f9 100644
--- a/yaml-reader.vcproj
+++ b/yaml-reader.vcproj
@@ -179,6 +179,10 @@
 				RelativePath=".\yaml-reader\parsertests.cpp"
 				>
 			</File>
+			<File
+				RelativePath=".\yaml-reader\spectests.cpp"
+				>
+			</File>
 			<File
 				RelativePath=".\yaml-reader\tests.cpp"
 				>
@@ -189,6 +193,18 @@
 			Filter="h;hpp;hxx;hm;inl;inc;xsd"
 			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
 			>
+			<File
+				RelativePath=".\yaml-reader\emittertests.h"
+				>
+			</File>
+			<File
+				RelativePath=".\yaml-reader\parsertests.h"
+				>
+			</File>
+			<File
+				RelativePath=".\yaml-reader\spectests.h"
+				>
+			</File>
 			<File
 				RelativePath=".\yaml-reader\tests.h"
 				>
diff --git a/yamlcpp.vcproj b/yamlcpp.vcproj
index 749ac8e..8673b8f 100644
--- a/yamlcpp.vcproj
+++ b/yamlcpp.vcproj
@@ -191,6 +191,10 @@
 					RelativePath=".\src\node.cpp"
 					>
 				</File>
+				<File
+					RelativePath=".\src\null.cpp"
+					>
+				</File>
 				<File
 					RelativePath=".\src\scalar.cpp"
 					>