diff --git a/python/sglang/srt/entrypoints/openai/protocol.py b/python/sglang/srt/entrypoints/openai/protocol.py
index ecb8a48b7..7f490e95c 100644
--- a/python/sglang/srt/entrypoints/openai/protocol.py
+++ b/python/sglang/srt/entrypoints/openai/protocol.py
@@ -388,7 +388,7 @@ class ToolCall(BaseModel):
 
 class ChatCompletionMessageGenericParam(BaseModel):
     role: Literal["system", "assistant", "tool", "function"]
-    content: Union[str, List[ChatCompletionMessageContentTextPart], None] = Field(
+    content: Union[str, List[ChatCompletionMessageContentPart], None] = Field(
         default=None
     )
     tool_call_id: Optional[str] = None