diff --git a/.github/workflows/images_build_rhel.yml b/.github/workflows/images_build_rhel.yml
index 8bf458d0a..779987d9d 100644
--- a/.github/workflows/images_build_rhel.yml
+++ b/.github/workflows/images_build_rhel.yml
@@ -91,7 +91,7 @@ jobs:
   build_base:
     timeout-minutes: 30
     name: Build ${{ matrix.build }} base on RHEL (${{ matrix.os }})
-    runs-on: [self-hosted, linux, ${{ matrix.os }}]
+    runs-on: [self-hosted, linux, "${{ matrix.os }}"]
     needs: ["init_build"]
     strategy:
       fail-fast: false