diff --git a/.github/workflows/sanitizer-tests.yaml b/.github/workflows/sanitizer-tests.yaml
index 4504ad87a81..6df8be9812e 100644
--- a/.github/workflows/sanitizer-tests.yaml
+++ b/.github/workflows/sanitizer-tests.yaml
@@ -119,7 +119,7 @@ jobs:
 
     env:
       FASTDDS_BRANCH: ${{ github.head_ref || github.event.inputs.fastdds_branch || '3.0.x-devel' }}
-      DEFAULT_DISCOVERY_SERVER_BRANCH: ${{ github.head_ref || github.event.inputs.discovery_server_branch || '3.0.x-devel' }}
+      DEFAULT_DISCOVERY_SERVER_BRANCH: ${{ github.event.inputs.discovery_server_branch || '3.0.x-devel' }}
 
     steps:
       - name: Install wget