diff --git a/.github/workflows/build-docker.yml b/.github/workflows/build-docker.yml
index 60feecc1..842442bf 100644
--- a/.github/workflows/build-docker.yml
+++ b/.github/workflows/build-docker.yml
@@ -26,11 +26,11 @@ jobs:
       - name: change-string-case
         run: |
           my_string="${{ github.repository }}"
-          echo "REPO=lowercase_string::${my_string,,}" >> $GITHUB_ENV
+          echo "REPO=${my_string,,}" >> $GITHUB_ENV
 
       - name: Build Docker image
         uses: docker/build-push-action@v6
         with:
           context: .
           push: true
-          tags: ghcr.io/${{ env.REPO.lowercase_string }}:${{ inputs.version }}
\ No newline at end of file
+          tags: ghcr.io/${{ env.REPO }}:${{ inputs.version }}
\ No newline at end of file