diff --git a/python/sglang/srt/managers/scheduler.py b/python/sglang/srt/managers/scheduler.py
index 263b2f7a5..9fb7003ef 100644
--- a/python/sglang/srt/managers/scheduler.py
+++ b/python/sglang/srt/managers/scheduler.py
@@ -2402,7 +2402,10 @@ class Scheduler(
         exec = None
         try:
             func = getattr(self, recv_req.method)
-            func(recv_req.parameters)
+            if recv_req.parameters is not None:
+                func(**recv_req.parameters)
+            else:
+                func()
         except Exception as e:
             success = False
             exec = e