diff --git a/build/wxExtend.vcxproj b/build/wxExtend.vcxproj
index 0bc58a7..3be577e 100644
--- a/build/wxExtend.vcxproj
+++ b/build/wxExtend.vcxproj
@@ -35,7 +35,7 @@
     <ClInclude Include="..\src\stdafx.h" />
   </ItemGroup>
   <ItemGroup>
-    <POCompile Include="..\locale\sl.po" />
+    <POCompile Include="..\locale\sl_SI.po" />
   </ItemGroup>
   <ItemGroup>
     <None Include="..\locale\wxExtend.pot" />
diff --git a/build/wxExtend.vcxproj.filters b/build/wxExtend.vcxproj.filters
index 5326fc7..f0c0f71 100644
--- a/build/wxExtend.vcxproj.filters
+++ b/build/wxExtend.vcxproj.filters
@@ -49,7 +49,7 @@
     </None>
   </ItemGroup>
   <ItemGroup>
-    <POCompile Include="..\locale\sl.po">
+    <POCompile Include="..\locale\sl_SI.po">
       <Filter>Resource Files\Localization</Filter>
     </POCompile>
   </ItemGroup>
diff --git a/locale/sl.po b/locale/sl_SI.po
similarity index 100%
rename from locale/sl.po
rename to locale/sl_SI.po