diff --git a/python/sglang/srt/disaggregation/mini_lb.py b/python/sglang/srt/disaggregation/mini_lb.py
index c7e0a20899c..8e3371c73f9 100644
--- a/python/sglang/srt/disaggregation/mini_lb.py
+++ b/python/sglang/srt/disaggregation/mini_lb.py
@@ -18,6 +18,10 @@
 
 from sglang.srt.disaggregation.utils import PDRegistryRequest
 
+AIOHTTP_STREAM_READ_CHUNK_SIZE = (
+    1024 * 64
+)  # 64KB, to prevent aiohttp's "Chunk too big" error
+
 
 def setup_logger():
     logger = logging.getLogger("pdlb")
@@ -154,7 +158,9 @@ async def stream_results():
                         else:
                             yield chunk
                 else:
-                    async for chunk in decode_response.content:
+                    async for chunk in decode_response.content.iter_chunked(
+                        AIOHTTP_STREAM_READ_CHUNK_SIZE
+                    ):
                         yield chunk
 
         return StreamingResponse(