diff --git a/litellm/router_utils/fallback_event_handlers.py b/litellm/router_utils/fallback_event_handlers.py
index bd9941d07b..98d9cd92de 100644
--- a/litellm/router_utils/fallback_event_handlers.py
+++ b/litellm/router_utils/fallback_event_handlers.py
@@ -9,7 +9,9 @@ async def log_success_fallback_event(original_model_group: str, kwargs: dict):
     for _callback in litellm.callbacks:
         if isinstance(_callback, CustomLogger):
             try:
-                await _callback.log_success_fallback_event()
+                await _callback.log_success_fallback_event(
+                    original_model_group=original_model_group, kwargs=kwargs
+                )
             except Exception as e:
                 verbose_router_logger.error(
                     f"Error in log_success_fallback_event: {(str(e))}"
@@ -21,7 +23,9 @@ async def log_failure_fallback_event(original_model_group: str, kwargs: dict):
     for _callback in litellm.callbacks:
         if isinstance(_callback, CustomLogger):
             try:
-                await _callback.log_failure_fallback_event()
+                await _callback.log_failure_fallback_event(
+                    original_model_group=original_model_group, kwargs=kwargs
+                )
             except Exception as e:
                 verbose_router_logger.error(
                     f"Error in log_failure_fallback_event: {(str(e))}"