diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index 2e8a2ebb17..18ec7bfde5 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -3816,6 +3816,7 @@ void cmVisualStudio10TargetGenerator::WriteProjectReferences(Elem& e0)
       }
       if (dt->GetManagedType("") < check || unmanagedStatic) {
         e2.Element("ReferenceOutputAssembly", "false");
+        e2.Element("CopyToOutputDirectory", "Never");
       }
     }
     e2.EndElement();