diff --git a/pydantic_ai_slim/pydantic_ai/profiles/qwen.py b/pydantic_ai_slim/pydantic_ai/profiles/qwen.py
index fa3e75827..c38f5bcb6 100644
--- a/pydantic_ai_slim/pydantic_ai/profiles/qwen.py
+++ b/pydantic_ai_slim/pydantic_ai/profiles/qwen.py
@@ -6,4 +6,6 @@
 
 def qwen_model_profile(model_name: str) -> ModelProfile | None:
     """Get the model profile for a Qwen model."""
-    return ModelProfile(json_schema_transformer=InlineDefsJsonSchemaTransformer)
+    return _QWEN_MODEL_PROFILE
+
+_QWEN_MODEL_PROFILE = ModelProfile(json_schema_transformer=InlineDefsJsonSchemaTransformer)