diff --git a/app/agent/callback/__init__.py b/app/agent/callback/__init__.py
index 316ec835..cb4e4c2e 100644
--- a/app/agent/callback/__init__.py
+++ b/app/agent/callback/__init__.py
@@ -355,7 +355,7 @@ class StreamingHandler:
         prefix = ""
         if self._buffer and last_char != "\n":
             prefix = "\n"
-        return f"{prefix}{summary}\n"
+        return f"{prefix}{summary}\n\n"
 
     @staticmethod
     def _format_tool_stat(category: str, count: int) -> str: