diff --git a/.github/workflows/dockerimagesim.yml b/.github/workflows/dockerimagesim.yml
index 559796e511423e35291d2833cbf1bdbeebef4477..ae74fa697ad376769c6e34fe27c9438be8703ff2 100644
--- a/.github/workflows/dockerimagesim.yml
+++ b/.github/workflows/dockerimagesim.yml
@@ -12,7 +12,7 @@ jobs:
     - name: test
       run: echo ${GITHUB_REF##*/}
     - name: test2
-      run: python3 -c "print ${GITHUB_REF##*/} == 'two_docker_images'"
+      run: python3 -c "print '${GITHUB_REF##*/}' == 'two_docker_images'"
     - name: Login to docker
       env:
         GITHUB_TOKEN: ${{ secrets.DOCKER_SECRET }}