diff --git a/nvflare/fuel/f3/communicator.py b/nvflare/fuel/f3/communicator.py
index 4ab4463b86..04d7dc7217 100644
--- a/nvflare/fuel/f3/communicator.py
+++ b/nvflare/fuel/f3/communicator.py
@@ -46,7 +46,7 @@ def load_comm_drivers():
     if not driver_path:
         return
 
-    for path in driver_path.split(":"):
+    for path in driver_path.split(os.pathsep):
         log.debug(f"Custom driver folder {path} is searched")
         driver_mgr.search_folder(path, None)