diff --git a/src/DIRAC/WorkloadManagementSystem/Agent/SiteDirector.py b/src/DIRAC/WorkloadManagementSystem/Agent/SiteDirector.py
index 84104150c11..2c775686723 100644
--- a/src/DIRAC/WorkloadManagementSystem/Agent/SiteDirector.py
+++ b/src/DIRAC/WorkloadManagementSystem/Agent/SiteDirector.py
@@ -1106,7 +1106,8 @@ def _writePilotScript(self, workingDirectory, pilotOptions, proxy=None, pilotExe
             self.log.exception("Exception during pilot modules files compression", lException=be)
 
         location = Operations().getValue("Pilot/pilotFileServer", "")
-        CVMFS_locations = Operations().getValue("Pilot/CVMFS_locations")
+        CVMFS_locations = Operations().getValue("Pilot/CVMFS_locations", [])
+
         localPilot = pilotWrapperScript(
             pilotFilesCompressedEncodedDict=pilotFilesCompressedEncodedDict,
             pilotOptions=pilotOptions,