diff --git a/modules/base_plugins/hysteresis/__init__.py b/modules/base_plugins/hysteresis/__init__.py
index ebc7419..a7d9b43 100644
--- a/modules/base_plugins/hysteresis/__init__.py
+++ b/modules/base_plugins/hysteresis/__init__.py
@@ -8,8 +8,8 @@ class Hysteresis(KettleController):
 
     # Custom Properties
 
-    on = Property.Number("Offset On", True, 0, description="Offset below target temp when heater should switched on. Should be bigger then Offset Off")
-    off = Property.Number("Offset Off", True, 0, description="Offset below target temp when heater should switched off. Should be smaller then Offset Off")
+    on = Property.Number("Offset On", True, 0, description="Offset below target temp when heater should be switched on. Should be bigger then Offset Off")
+    off = Property.Number("Offset Off", True, 0, description="Offset below target temp when heater should be switched off. Should be smaller then Offset Off")
 
     def stop(self):
         '''