diff --git a/freqtrade/strategy/interface.py b/freqtrade/strategy/interface.py
index ddd10dd8e..1084838ec 100644
--- a/freqtrade/strategy/interface.py
+++ b/freqtrade/strategy/interface.py
@@ -125,7 +125,6 @@ class IStrategy(ABC, HyperStrategyMixin):
         self.config = config
         # Dict to determine if analysis is necessary
         self._last_candle_seen_per_pair: Dict[str, datetime] = {}
-        self._last_candle_seen_external: Dict[str, datetime] = {}
         super().__init__(config)
 
         # Gather informative pairs from @informative-decorated methods.