diff --git a/src/openai/_models.py b/src/openai/_models.py
index 20cd4c29bc..a9669c40ef 100644
--- a/src/openai/_models.py
+++ b/src/openai/_models.py
@@ -362,7 +362,7 @@ def model_dump_json(
             """
             if round_trip != False:
                 raise ValueError("round_trip is only supported in Pydantic v2")
-            if warnings != True:
+            if warnings == True:
                 raise ValueError("warnings is only supported in Pydantic v2")
             if context is not None:
                 raise ValueError("context is only supported in Pydantic v2")