diff --git a/freqtrade/strategy/interface.py b/freqtrade/strategy/interface.py
index 765e23b0b..a26e8edbd 100644
--- a/freqtrade/strategy/interface.py
+++ b/freqtrade/strategy/interface.py
@@ -283,6 +283,7 @@ class IStrategy(ABC):
         if (arrow.utcnow() - signal_date).total_seconds() // 60 >= interval_minutes:
             logger.warning('Old candle for pair %s. Last tick is %s minutes old',
                            pair, (arrow.utcnow() - signal_date).total_seconds() // 60)
+            return False, False
 
         # Check if dataframe is out of date
         offset = self.config.get('exchange', {}).get('outdated_offset', 5)