diff --git a/build/WinStd.props b/build/WinStd.props
index c32fe0a0..103fc124 100644
--- a/build/WinStd.props
+++ b/build/WinStd.props
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ImportGroup Label="PropertySheets">
-    <Import Project="..\..\..\include\$(Platform).props" />
-    <Import Project="..\..\..\include\$(Configuration).props" />
+    <Import Project="..\..\..\include\$(Platform).props" Condition="exists('..\..\..\include\$(Platform).props')" />
+    <Import Project="..\..\..\include\$(Configuration).props" Condition="exists('..\..\..\include\$(Configuration).props')" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup />