diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index c3241fdd22..98104c1cf2 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -118,7 +118,7 @@ jobs:
         run: eval "$BUILD"
       - name: Mutation tests
         timeout-minutes: 5
-        run: ${{ env.RUN }} "GIT_REF=${{ github.event_name == 'push' && github.ref == 'refs/heads/master' && github.event.before || 'origin/master' }} MUTATION_MODE=${{ matrix.mutation_mode }} cd tests/safety && ./mutation.sh"
+        run: ${{ env.RUN }} "GIT_REF=${{ github.event_name == 'push' && github.ref == 'refs/heads/master' && github.event.before || 'origin/master' }} cd tests/safety && MUTATION_MODE=${{ matrix.mutation_mode }} ./mutation.sh"
 
   static_analysis:
     name: static analysis