diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1000184572128e0899d29cc103cfe8b1f08639d0..b51a6cda3a062145c8da1b91b179329f2a2be297 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -94,7 +94,7 @@ pep8:
     - output_${PREF}.log
     expire_in: 1 hour
   rules:
-    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $COMPILE_DOCKER == null
+    - if: $CI_PIPELINE_SOURCE == "schedule" && $COMPILE_DOCKER == null
 
 test_ppparis:
   variables: