diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bdb9bc4..52d0b58 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,6 +19,9 @@ jobs:
       - name: Check delimited-string for Docker tags
         run: |
           echo "${{ steps.docker-tags.outputs.target_string }}"
-          if [ "${{ steps.docker-tags.outputs.target_string }}" != "ghcr.io/foo-bar:dev, ghcr.io/foo-bar:tst, ghcr.io/foo-bar:prd" ]; then
+
+          expected="ghcr.io/foo-bar:dev, ghcr.io/foo-bar:tst, ghcr.io/foo-bar:prd"
+          if [ "${{ steps.docker-tags.outputs.target_string }}" != "$expected" ]; then
+            echo "${{ steps.docker-tags.outputs.target_string }} does not match $expected"
             exit 1
           fi