diff --git a/src/DIRAC/TransformationSystem/Agent/TransformationCleaningAgent.py b/src/DIRAC/TransformationSystem/Agent/TransformationCleaningAgent.py
index 51035bf8654..27b1d6a9303 100644
--- a/src/DIRAC/TransformationSystem/Agent/TransformationCleaningAgent.py
+++ b/src/DIRAC/TransformationSystem/Agent/TransformationCleaningAgent.py
@@ -653,7 +653,7 @@ def __removeWMSTasks(self, transJobIDs):
         jobIDs = [int(j) for j in transJobIDs if int(j)]
         allRemove = True
         for jobList in breakListIntoChunks(jobIDs, 500):
-            res = self.wmsClient.killJob(jobList)
+            res = self.wmsClient.killJob(jobList, force=True)
             if res["OK"]:
                 self.log.info(f"Successfully killed {len(jobList)} jobs from WMS")
             elif ("InvalidJobIDs" in res) and ("NonauthorizedJobIDs" not in res) and ("FailedJobIDs" not in res):