diff --git a/athena_ci/ci.yml b/athena_ci/ci.yml
index e8a220cb8a2d968cd5a7077c8686652647c36638..940439f8766735278ea45b3428a67856f0ede4e8 100644
--- a/athena_ci/ci.yml
+++ b/athena_ci/ci.yml
@@ -119,7 +119,7 @@ simulation_tests_run3:
   extends: .run_base
   script:
     - cd run
-    - RunWorkflowTests_Run3.py --CI -s -w FullSim --threads 4 -e '--maxEvents 50' --detailed-comparison
+    - RunWorkflowTests_Run3.py --CI -s -w FullSim --threads 4 -e '--maxEvents 20' --run-only 
     - mv run_s4006/log.EVNTtoHITS ./
     - mv run_s4006/myHITS.pool.root ./
   artifacts: