diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 244fe29..a66c8f0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -27,7 +27,7 @@ jobs:
     - name: Build
       run:  |
         write-Host "Building a sln"
-        $env:MSB -m -t:Rebuild /p:Configuration=Release /p:Platform="Any CPU" /fl SourceGrid_2013.sln
+        "${env:MSB}" -m -t:Rebuild /p:Configuration=Release /p:Platform="Any CPU" /fl SourceGrid_2013.sln
       env:
          MSB: ${{ secrets.TEST }}