diff --git a/.github/workflows/build-images.yaml b/.github/workflows/build-images.yaml
index 5f242ac..86f18c2 100644
--- a/.github/workflows/build-images.yaml
+++ b/.github/workflows/build-images.yaml
@@ -29,7 +29,7 @@ jobs:
         run: |
           IMAGES="$(find images -mindepth 1 -maxdepth 1 -type d -printf %f\\n | jq -R -s -c 'split("\n")[:-1]')"
           INPUT="${{ inputs.appsToBuild }}"
-          echo "apps=${INPUT:-IMAGES}" >> $GITHUB_OUTPUT
+          echo "apps=${INPUT:-$IMAGES}" >> $GITHUB_OUTPUT
 
   build-and-push-image:
     runs-on: ubuntu-latest