diff --git a/dlls/geoip/msvc12/geoip.vcxproj b/dlls/geoip/msvc12/geoip.vcxproj
index 49ce2678..0e315478 100644
--- a/dlls/geoip/msvc12/geoip.vcxproj
+++ b/dlls/geoip/msvc12/geoip.vcxproj
@@ -98,7 +98,7 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClCompile Include="..\GeoIP2\maxminddb.cpp" />
+    <ClCompile Include="..\GeoIP2\maxminddb.c" />
     <ClCompile Include="..\geoip_main.cpp" />
     <ClCompile Include="..\geoip_natives.cpp" />
     <ClCompile Include="..\geoip_util.cpp" />
@@ -120,4 +120,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>