diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 279dc06c..dd748fb4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,6 +6,7 @@ on:
 
 jobs:
   build:
+    if: ${{ github.repository != 'msys2/MSYS2-packages' || github.event_name != 'push' || github.ref != 'refs/heads/master'}}
     runs-on: windows-latest
 
     steps: