diff --git a/plugins/CuraEngineBackend/StartSliceJob.py b/plugins/CuraEngineBackend/StartSliceJob.py
index 5b948c90ab..fc9fd05b44 100644
--- a/plugins/CuraEngineBackend/StartSliceJob.py
+++ b/plugins/CuraEngineBackend/StartSliceJob.py
@@ -227,7 +227,7 @@ class StartSliceJob(Job):
     #   global_inherits_stack property.
     def _buildGlobalInheritsStackMessage(self, stack):
         for key in stack.getAllKeys():
-            extruder = int(stack.getProperty(key, "global_inherits_stack"))
+            extruder = int(round(float(stack.getProperty(key, "global_inherits_stack"))))
             if extruder >= 0: #Set to a specific extruder.
                 setting_extruder = self._slice_message.addRepeatedMessage("global_inherits_stack")
                 setting_extruder.name = key
diff --git a/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py b/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py
index a580382845..e487870d8a 100644
--- a/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py
+++ b/plugins/PerObjectSettingsTool/PerObjectSettingVisibilityHandler.py
@@ -62,7 +62,7 @@ class PerObjectSettingVisibilityHandler(UM.Settings.Models.SettingVisibilityHand
                     if definition.global_inherits_stack and self._stack.getProperty("machine_extruder_count", "value") > 1:
                         #Obtain the value from the correct container stack. Only once, upon adding the setting.
                         stack_nr = self._stack.getProperty(item, "global_inherits_stack") #Stack to get the setting from.
-                        if int(stack_nr) >= 0: #Only if it defines an extruder stack.
+                        if float(stack_nr) >= 0: #Only if it defines an extruder stack.
                             extruder_stack = UM.Settings.ContainerRegistry.getInstance().findContainerStacks(id = ExtruderManager.getInstance().extruderIds[stack_nr])[0]
                             new_instance.setProperty("value", extruder_stack.getProperty(item, "value"))
                     settings.addInstance(new_instance)