diff --git a/custom_components/robovac/robovac.py b/custom_components/robovac/robovac.py
index 02c65c6..e247896 100644
--- a/custom_components/robovac/robovac.py
+++ b/custom_components/robovac/robovac.py
@@ -112,7 +112,7 @@ class RoboVac(TuyaDevice):
         return ROBOVAC_SERIES_FEATURES[self.getRoboVacSeries()]
 
     def getRoboVacSeries(self):
-        for series, models in ROBOVAC_SERIES:
+        for series, models in ROBOVAC_SERIES.items():
             if self.model_code in models:
                 return series