diff --git a/Calendar/WeatherColumnDesign.py b/Calendar/WeatherColumnDesign.py
index 3c5c165..14d781c 100644
--- a/Calendar/WeatherColumnDesign.py
+++ b/Calendar/WeatherColumnDesign.py
@@ -82,7 +82,7 @@ class WeatherColumnDesign (DesignEntity):
 
 
     def __get_unit__ (self, tuple):
-        if self.forecast.units == "metric":
+        if self.forecast.units == "metric" or self.forecast.units == "aviation":
             return tuple[0]
         else:
             return tuple[1]
diff --git a/Calendar/WeatherHeaderDesign.py b/Calendar/WeatherHeaderDesign.py
index c6d21aa..eadcff8 100644
--- a/Calendar/WeatherHeaderDesign.py
+++ b/Calendar/WeatherHeaderDesign.py
@@ -63,7 +63,7 @@ class WeatherHeaderDesign (DesignEntity):
         self.draw_design(txt)
 
     def __get_unit__ (self, tuple):
-        if units == "metric":
+        if units == "metric" or units == "aviation":
             return tuple[0]
         else:
             return tuple[1]