diff --git a/litellm/utils.py b/litellm/utils.py
index 3c4a57ead6..ae97cc6184 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -1361,7 +1361,7 @@ def exception_type(model, original_exception, custom_llm_provider):
                 original_exception.llm_provider = "azure"
             else:
                 original_exception.llm_provider = "openai"
-            if "This model's maximum context length is" in original_exception:
+            if "This model's maximum context length is" in original_exception.message:
                 raise ContextWindowExceededError(
                     message=str(original_exception),
                     model=model,