diff --git a/.github/workflows/build_docker_images.yml b/.github/workflows/build_docker_images.yml
index dddcd5c..73a844f 100644
--- a/.github/workflows/build_docker_images.yml
+++ b/.github/workflows/build_docker_images.yml
@@ -53,7 +53,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Login to DockerHub
-        if: github.event_name != 'pull_request'
+        if: github.event_name != 'pull_request' && env.DOCKERHUB_USERNAME != ''
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}