diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index 2395ce7db..1de284721 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -1305,6 +1305,10 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
     {
     tool = "Image";
     }
+  else if(ext == "resw")
+    {
+    tool = "PRIResource";
+    }
   else if(ext == "xml")
     {
     tool = "XML";