--- a/.github/workflows/test_codestyle_v2.yml
+++ b/.github/workflows/test_codestyle_v2.yml
@@ -5,7 +5,7 @@
 
 jobs:
   code_style:
-    runs-on: self-hosted-ci
+    runs-on: [ self-hosted-ci ]
 
     steps:
       - uses: actions/checkout@v3