diff --git a/Control/brewpi/plant.py b/Control/brewpi/plant.py
index bffcf8a..0e1d1f4 100644
--- a/Control/brewpi/plant.py
+++ b/Control/brewpi/plant.py
@@ -12,8 +12,8 @@ class Plant(APlant):
 		self.P = 0
 		self.isOn = False
 
-	def activate(self, enable):
-		if enable:
+	def activate(self, enable=True):
+		if enable == True:
 			self.heater.remoteEnable(enable)
 			self.heater.setSwitch(enable)
 		else: