diff --git a/.github/workflows/docker-multiplatform.yml b/.github/workflows/docker-multiplatform.yml
index 31e84a2..413addf 100644
--- a/.github/workflows/docker-multiplatform.yml
+++ b/.github/workflows/docker-multiplatform.yml
@@ -22,7 +22,8 @@ jobs:
       - name: 'Checkout'
         uses: actions/checkout@v3
         with: 
-          ref: ${{ inputs.tag }}
+          - ref: ${{ inputs.tag }}
+            if: "${{ inputs.tag != '' }}"
       - name: Prepare
         id: prep
         run: |