diff --git a/.forgejo/workflows/test-build.yaml b/.forgejo/workflows/test-build.yaml
index 74d22e1..78b9fd8 100644
--- a/.forgejo/workflows/test-build.yaml
+++ b/.forgejo/workflows/test-build.yaml
@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v3
       - name: Build container
         run: |
-          export DOCKER_HOST: tcp://docker-in-docker:2375
+          export DOCKER_HOST=tcp://docker-in-docker:2375
           docker build . -t toolkit-test:${{ github.ref_name }}
       - name: Inspect image
         run: docker image inspect toolkit-test:${{ github.ref_name }}