diff --git a/test/test_schedulers_mono.py b/test/test_schedulers_mono.py
index 0e85977b01abbef599b45d9a91421073b6f99ed6..0ab0d6493337fa307980643eded77848a730a5df 100755
--- a/test/test_schedulers_mono.py
+++ b/test/test_schedulers_mono.py
@@ -26,8 +26,9 @@ def test_fcfs(platform_monoC, workload_static):
 
     # Checks that the jobs have been executed in FCFS order
     jobs = pd.read_csv(f"{output_dir}/_jobs.csv")
+    jobs = jobs[jobs.success==1]
     jobs.sort_values(by="submission_time", inplace=True)
-    assert jobs[jobs.success==1].starting_time.is_monotonic_increasing
+    assert jobs.starting_time.is_monotonic_increasing
 
 def test_easy_bf_small_instance():
     """Tests the scheduler easy backfilling on a small instance"""