diff --git a/fastchat/serve/sglang_worker.py b/fastchat/serve/sglang_worker.py
index 2e9b60770..792b10bb6 100644
--- a/fastchat/serve/sglang_worker.py
+++ b/fastchat/serve/sglang_worker.py
@@ -140,13 +140,13 @@ async def generate_stream(self, params):
         async for out, meta_info in state.text_async_iter(
             var_name="response", return_meta_data=True
         ):
-            partial_stop = any(is_partial_stop(out, i) for i in stop)
+            entire_output += out
+            partial_stop = any(is_partial_stop(entire_output, i) for i in stop)
 
             # prevent yielding partial stop sequence
             if partial_stop:
                 continue
 
-            entire_output += out
             prompt_tokens = meta_info["prompt_tokens"]
             completion_tokens = meta_info["completion_tokens"]