diff --git a/fincal/fincal.py b/fincal/fincal.py
index d874210..03564c9 100644
--- a/fincal/fincal.py
+++ b/fincal/fincal.py
@@ -196,7 +196,7 @@ class TimeSeriesCore:
     def tail(self, n: int = 6):
         keys = list(self.time_series.keys())
         keys = keys[-n:]
-        result = [item for item in self.time_series.items() if item[0] in keys]
+        result = [(key, self.time_series[key]) for key in keys]
         return result