diff --git a/.github/workflows/slycot-build-and-test.yml b/.github/workflows/slycot-build-and-test.yml
index 7d931e82..0e2b6b71 100644
--- a/.github/workflows/slycot-build-and-test.yml
+++ b/.github/workflows/slycot-build-and-test.yml
@@ -361,7 +361,7 @@ jobs:
           mamba install -c ./slycot-conda-pkgs slycot
           conda list
       - name: Slycot and python-control tests
-        run: JOBNAME=$JOBNAME bash slycot-src/.github/scripts/run-tests.sh
+        run: JOBNAME="$JOBNAME" bash slycot-src/.github/scripts/run-tests.sh
         env:
           JOBNAME: ${{ matrix.packagekey }} ${{ matrix.blas_lib }}
       - name: Report coverage