diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index afefa27baa..2f7c10a3d0 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -13,6 +13,7 @@ jobs:
   nightly:
     name: Build and publish nightly APK to Firebase
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'vector-im/element-x-android' }}
     steps:
       - uses: actions/checkout@v3
       - name: Use JDK 17