diff --git a/.github/workflows/docker-mod-builder.yml b/.github/workflows/docker-mod-builder.yml
index 0860714..b0b37be 100644
--- a/.github/workflows/docker-mod-builder.yml
+++ b/.github/workflows/docker-mod-builder.yml
@@ -21,6 +21,7 @@ on:
       MOD_VERSION_OVERRIDE:
         required: false
         type: string
+        default: "false"
       MULTI_ARCH:
         required: false
         type: string