diff --git a/.github/actions/setup-docker-environment/action.yaml b/.github/actions/setup-docker-environment/action.yaml
index 6a181f05..35218844 100644
--- a/.github/actions/setup-docker-environment/action.yaml
+++ b/.github/actions/setup-docker-environment/action.yaml
@@ -16,7 +16,7 @@ runs:
       run: |
         echo ::set-output name=sha_short::${GITHUB_SHA::7}
         TAG=${GITHUB_REF##*/}
-        if [ "main" == "${TAG} ]; then
+        if [ "main" == "${TAG}" ]; then
           TAG=canary
         fi
         echo ::set-output name=tag::${TAG:-canary}