diff --git a/win32/zlib/zlib.vcproj b/win32/zlib/zlib.vcproj
index f46c59a5..979ff284 100644
--- a/win32/zlib/zlib.vcproj
+++ b/win32/zlib/zlib.vcproj
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="Windows-1252"?>
 <VisualStudioProject
 	ProjectType="Visual C++"
-	Version="9,00"
+	Version="9.00"
 	Name="zlib"
 	ProjectGUID="{99E9817A-4605-44AF-8433-7048F0EC1859}"
 	RootNamespace="zlib"
@@ -569,7 +569,19 @@
 				>
 			</File>
 			<File
-				RelativePath="..\..\..\zlib\gzio.c"
+				RelativePath="..\..\..\zlib\gzclose.c"
+				>
+			</File>
+			<File
+				RelativePath="..\..\..\zlib\gzlib.c"
+				>
+			</File>
+			<File
+				RelativePath="..\..\..\zlib\gzread.c"
+				>
+			</File>
+			<File
+				RelativePath="..\..\..\zlib\gzwrite.c"
 				>
 			</File>
 			<File