diff --git a/.github/workflows/build-multiarch.yml b/.github/workflows/build-multiarch.yml
index 647f33c5..bd15e03f 100644
--- a/.github/workflows/build-multiarch.yml
+++ b/.github/workflows/build-multiarch.yml
@@ -23,6 +23,7 @@ on:
 
 jobs:
   docker-buildx:
+    if: github.repository == 'itzg/minecraft-server'
     runs-on: ubuntu-20.04
     env:
       CACHE_NAME: master