diff --git a/tst/airfs/airfs.vcxproj.filters b/tst/airfs/airfs.vcxproj.filters
index f67a722d..8ade23f2 100644
--- a/tst/airfs/airfs.vcxproj.filters
+++ b/tst/airfs/airfs.vcxproj.filters
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <Filter Include="Source">
@@ -10,5 +10,13 @@
     <ClCompile Include="airfs.cpp">
       <Filter>Source</Filter>
     </ClCompile>
+    <ClCompile Include="persistence.cpp">
+      <Filter>Source</Filter>
+    </ClCompile>
   </ItemGroup>
-</Project>
\ No newline at end of file
+  <ItemGroup>
+    <ClInclude Include="common.h">
+      <Filter>Source</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>