diff --git a/freqtrade/rpc/api_server/api_schemas.py b/freqtrade/rpc/api_server/api_schemas.py
index f21334bc6..a31c74c2e 100644
--- a/freqtrade/rpc/api_server/api_schemas.py
+++ b/freqtrade/rpc/api_server/api_schemas.py
@@ -166,7 +166,7 @@ class ShowConfig(BaseModel):
     trailing_stop_positive: Optional[float]
     trailing_stop_positive_offset: Optional[float]
     trailing_only_offset_is_reached: Optional[bool]
-    unfilledtimeout: UnfilledTimeout
+    unfilledtimeout: Optional[UnfilledTimeout]  # Empty in webserver mode
     order_types: Optional[OrderTypes]
     use_custom_stoploss: Optional[bool]
     timeframe: Optional[str]