diff --git a/python/sglang/srt/server_args.py b/python/sglang/srt/server_args.py
index 57f918e611..144ade58ea 100644
--- a/python/sglang/srt/server_args.py
+++ b/python/sglang/srt/server_args.py
@@ -144,7 +144,7 @@ def __post_init__(self):
         if self.served_model_name is None:
             self.served_model_name = self.model_path
 
-        if self.chunked_prefill_size <= 0:
+        if self.chunked_prefill_size is not None and self.chunked_prefill_size <= 0:
             # Disable chunked prefill
             self.chunked_prefill_size = None
 
@@ -199,10 +199,6 @@ def __post_init__(self):
                 "Overlap schedule is disabled."
             )
 
-        # Model-specific changes
-        if "Qwen2-VL-" in self.model_path:
-            self.disable_overlap_schedule = True
-
     @staticmethod
     def add_cli_args(parser: argparse.ArgumentParser):
         # Model and port args