diff --git a/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py b/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py index fb78134833..ea64ddbb35 100644 --- a/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py +++ b/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py @@ -71,7 +71,7 @@ class PerObjectSettingVisibilityHandler(UM.Settings.Models.SettingVisibilityHand # Add all instances that are not added, but are in visibility list for item in visible: - if not settings.getInstance(item): # Setting was not added already. + if settings.getInstance(item) is not None: # Setting was not added already. definition = self._stack.getSettingDefinition(item) if definition: new_instance = SettingInstance(definition, settings)