diff --git a/visualc/VS2010/generic_sum.vcxproj b/visualc/VS2010/generic_sum.vcxproj
index 1a8a87b..441c9cb 100644
--- a/visualc/VS2010/generic_sum.vcxproj
+++ b/visualc/VS2010/generic_sum.vcxproj
@@ -27,7 +27,7 @@
     </ProjectReference>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{54880004-9AA2-434D-A2F0-7F59D6F1536A}</ProjectGuid>
+    <ProjectGuid>{7036A174-35D6-54AE-7613-A50F5FD8AF86}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>generic_sum</RootNamespace>
   </PropertyGroup>