diff --git a/mime.vcxproj b/mime.vcxproj
index 43acee9..575f985 100755
--- a/mime.vcxproj
+++ b/mime.vcxproj
@@ -20,6 +20,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="src\mime.c" />
+    <ClCompile Include="src\compat.c" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{128E8BD0-174A-48F0-8771-92B1E8D18713}</ProjectGuid>
diff --git a/socket.vcxproj b/socket.vcxproj
index 305c094..51ebc68 100755
--- a/socket.vcxproj
+++ b/socket.vcxproj
@@ -21,6 +21,7 @@
   <ItemGroup>
     <ClCompile Include="src\auxiliar.c" />
     <ClCompile Include="src\buffer.c" />
+    <ClCompile Include="src\compat.c" />
     <ClCompile Include="src\except.c" />
     <ClCompile Include="src\inet.c" />
     <ClCompile Include="src\io.c" />