diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 024918b61..87698cad6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -110,7 +110,7 @@ jobs:
       - name: Build_Tapis_UI_Image
         run: |
           BRANCH="${{ needs.Resolve_Image_Tag.outputs.image_tag }}"
-          if [[ "${{ contains(needs.Resolve_Image_Tag.outputs.image_tag, 'refs/pull/') }}" ]]; then
+          if [ "${{ contains(needs.Resolve_Image_Tag.outputs.image_tag, 'refs/pull/') }}" == true ]; then
             BRANCH=dev
           fi
           docker build -f Dockerfile -t tapis/tapisui:$BRANCH .