diff --git a/src/DIRAC/WorkloadManagementSystem/Utilities/PilotCStoJSONSynchronizer.py b/src/DIRAC/WorkloadManagementSystem/Utilities/PilotCStoJSONSynchronizer.py
index 5b4cb6afae3..a459ec80c28 100644
--- a/src/DIRAC/WorkloadManagementSystem/Utilities/PilotCStoJSONSynchronizer.py
+++ b/src/DIRAC/WorkloadManagementSystem/Utilities/PilotCStoJSONSynchronizer.py
@@ -11,7 +11,6 @@
 import shutil
 import tarfile
 from typing import Any
-
 from git import Repo
 
 from DIRAC import S_OK, gConfig, gLogger
@@ -217,6 +216,10 @@ def getCSDict(self, includeMasterCS: bool = True) -> DReturnType[Any]:
 
         pilotDict["ConfigurationServers"] = configurationServers
 
+        preferredURLPatterns = gConfigurationData.extractOptionFromCFG("/DIRAC/PreferredURLPatterns")
+        if preferredURLPatterns:
+            pilotDict["PreferredURLPatterns"] = preferredURLPatterns
+
         self.log.debug("Got pilotDict", str(pilotDict))
 
         return S_OK(pilotDict)