diff --git a/projects/langs_vs140.vcxproj.filters b/projects/langs_vs140.vcxproj.filters
--- a/projects/langs_vs140.vcxproj.filters
+++ b/projects/langs_vs140.vcxproj.filters
@@ -142,6 +142,9 @@
     <CustomBuild Include="..\src\lang\slovenian.txt">
       <Filter>Translations</Filter>
     </CustomBuild>
+    <CustomBuild Include="..\src\lang\spanish_MX.txt">
+      <Filter>Translations</Filter>
+    </CustomBuild>
     <CustomBuild Include="..\src\lang\spanish.txt">
       <Filter>Translations</Filter>
     </CustomBuild>