diff --git a/litellm/proxy/db/db_spend_update_writer.py b/litellm/proxy/db/db_spend_update_writer.py
index 79312520407..5f363f36da8 100644
--- a/litellm/proxy/db/db_spend_update_writer.py
+++ b/litellm/proxy/db/db_spend_update_writer.py
@@ -893,7 +893,7 @@ async def _update_daily_spend(
                                 "model_group": transaction.get("model_group"),
                                 "mcp_namespaced_tool_name": transaction.get(
                                     "mcp_namespaced_tool_name"
-                                ),
+                                ) or "",
                                 "custom_llm_provider": transaction.get(
                                     "custom_llm_provider"
                                 ),