diff --git a/WickedEngine.sln b/WickedEngine.sln
index c6b399601..be22d34dd 100644
--- a/WickedEngine.sln
+++ b/WickedEngine.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26228.9
+VisualStudioVersion = 15.0.26228.10
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "WickedEngine_SHARED", "WickedEngine\WickedEngine_SHARED.vcxitems", "{45D41ACC-2C3C-43D2-BC10-02AA73FFC7C7}"
 EndProject
diff --git a/WickedEngine/WickedEngine_SHARED.vcxitems.filters b/WickedEngine/WickedEngine_SHARED.vcxitems.filters
index 5ef3ba8c3..595e825bb 100644
--- a/WickedEngine/WickedEngine_SHARED.vcxitems.filters
+++ b/WickedEngine/WickedEngine_SHARED.vcxitems.filters
@@ -1098,7 +1098,9 @@
     <ClInclude Include="$(MSBuildThisFileDirectory)Include_DX11.h">
       <Filter>ENGINE\Graphics\API</Filter>
     </ClInclude>
-    <ClInclude Include="$(MSBuildThisFileDirectory)wiMeshOptimizer.h" />
+    <ClInclude Include="C:\PROJECTS\WickedEngine\WickedEngine\wiMeshOptimizer.h">
+      <Filter>ENGINE\Graphics</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="$(MSBuildThisFileDirectory)LUA\lapi.c">