diff --git a/cura/BuildVolume.py b/cura/BuildVolume.py
index 290b8ee2de..ff5888b722 100755
--- a/cura/BuildVolume.py
+++ b/cura/BuildVolume.py
@@ -104,7 +104,6 @@ class BuildVolume(SceneNode):
         # but it does not update the disallowed areas after material change
         Application.getInstance().getMachineManager().activeStackChanged.connect(self._onStackChanged)
 
-
     def _onSceneChanged(self, source):
         if self._global_container_stack:
             self._change_timer.start()
@@ -637,7 +636,7 @@ class BuildVolume(SceneNode):
             result[extruder.getId()] = []
 
         #Currently, the only normally printed object is the prime tower.
-        if ExtruderManager.getInstance().getResolveOrValue("prime_tower_enable") == True:
+        if ExtruderManager.getInstance().getResolveOrValue("prime_tower_enable"):
             prime_tower_size = self._global_container_stack.getProperty("prime_tower_size", "value")
             machine_width = self._global_container_stack.getProperty("machine_width", "value")
             machine_depth = self._global_container_stack.getProperty("machine_depth", "value")