diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 97230f86a..d6038f4b0 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -155,7 +155,7 @@ jobs:
       with:
         dotnet-version: '6.0.113'
     - name: HACK to emulate legacy .NETFramework uninstall
-      run: del $(& "%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" -find MSBuild\\**\\Bin\\MSBuild.exe)
+      run: del $(& "${Env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe" -find MSBuild\\**\\Bin\\MSBuild.exe)
     - name: configure
       run: .\configure.bat
     - name: build in DEBUG mode