diff --git a/.github/workflows/build_650.yml b/.github/workflows/build_650.yml
index 186f091..aa9ed52 100644
--- a/.github/workflows/build_650.yml
+++ b/.github/workflows/build_650.yml
@@ -6,9 +6,9 @@ name: build_650
 on:
   # Triggers the workflow on push or pull request events but only for the "main" branch
   push:
-    branches: [ "main" ]
+    branches: [ "master" ]
   pull_request:
-    branches: [ "main" ]
+    branches: [ "master" ]
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: