diff --git a/python/sglang/multimodal_gen/runtime/utils/distributed.py b/python/sglang/multimodal_gen/runtime/utils/distributed.py
index c89a31dcc..24608e9e9 100644
--- a/python/sglang/multimodal_gen/runtime/utils/distributed.py
+++ b/python/sglang/multimodal_gen/runtime/utils/distributed.py
@@ -32,7 +32,7 @@ def broadcast_pyobj(
             size = len(serialized_data)
 
             tensor_data = torch.ByteTensor(
-                np.frombuffer(serialized_data, dtype=np.uint8)
+                np.frombuffer(serialized_data, dtype=np.uint8).copy()
             ).to(device)
             tensor_size = torch.tensor([size], dtype=torch.long, device=device)