diff --git a/litellm/main.py b/litellm/main.py
index 26eebfb170..f094d74877 100644
--- a/litellm/main.py
+++ b/litellm/main.py
@@ -4434,6 +4434,8 @@ def image_generation(  # noqa: PLR0915
             },
             custom_llm_provider=custom_llm_provider,
         )
+        if "custom_llm_provider" not in logging.model_call_details:
+            logging.model_call_details["custom_llm_provider"] = custom_llm_provider
         if mock_response is not None:
             return mock_image_generation(model=model, mock_response=mock_response)