diff --git a/action.yml b/action.yml
index 026e472..64ac185 100644
--- a/action.yml
+++ b/action.yml
@@ -12,6 +12,6 @@ runs:
         curl -OL https://github.com/meco-group/mockups/releases/download/v4/mockups_${{ inputs.tag }}.zip
         unzip mockups_${{ inputs.tag }}.zip -d mockups
         ls mockups
-        echo "MATLAB_ROOT=$GITHUB_ACTION_PATH/mockups/matlab" >> $GITHUB_ENV
+        echo "MATLAB_ROOT=$GITHUB_ACTION_PATH\\mockups\\install" >> $GITHUB_ENV
       shell: bash