diff --git a/.github/workflows/push_into_none_master.yaml b/.github/workflows/push_into_none_master.yaml
index 67a4cd4..a4d7353 100644
--- a/.github/workflows/push_into_none_master.yaml
+++ b/.github/workflows/push_into_none_master.yaml
@@ -3,7 +3,7 @@ name: "Build and test release Maven GitHub action"
 on:
   push:
     branches:
-      - !master
+      - "!master"
 
 jobs:
   build_and_test: