diff --git a/python/sglang/srt/models/qwen2_5_vl.py b/python/sglang/srt/models/qwen2_5_vl.py
index 48270ee21..59f3e6370 100644
--- a/python/sglang/srt/models/qwen2_5_vl.py
+++ b/python/sglang/srt/models/qwen2_5_vl.py
@@ -526,6 +526,7 @@ class Qwen2_5_VLForConditionalGeneration(nn.Module):
     def get_input_embeddings(self):
         return self.model.embed_tokens
 
+    @torch.no_grad()
     def forward(
         self,
         input_ids: torch.Tensor,