diff --git a/plugins/3MFWriter/ThreeMFWorkspaceWriter.py b/plugins/3MFWriter/ThreeMFWorkspaceWriter.py
index f805936ab5..0a915d610e 100644
--- a/plugins/3MFWriter/ThreeMFWorkspaceWriter.py
+++ b/plugins/3MFWriter/ThreeMFWorkspaceWriter.py
@@ -2,11 +2,9 @@ from UM.Workspace.WorkspaceWriter import WorkspaceWriter
 from UM.Application import Application
 from UM.Preferences import Preferences
 from UM.Settings.ContainerRegistry import ContainerRegistry
-from UM.Settings.ContainerStack import ContainerStack
 from cura.Settings.ExtruderManager import ExtruderManager
 import zipfile
 from io import StringIO
-import copy
 import configparser
 
 
diff --git a/plugins/SliceInfoPlugin/SliceInfo.py b/plugins/SliceInfoPlugin/SliceInfo.py
index 0af9c85607..57df84ffc4 100755
--- a/plugins/SliceInfoPlugin/SliceInfo.py
+++ b/plugins/SliceInfoPlugin/SliceInfo.py
@@ -76,8 +76,11 @@ class SliceInfo(Extension):
             data["active_machine"] = {"definition_id": global_container_stack.definition.getId(), "manufacturer": global_container_stack.definition.getMetaData().get("manufacturer","")}
 
             data["extruders"] = []
-            extruders = list(ExtruderManager.getInstance().getMachineExtruders(global_container_stack.getId()))
-            extruders = sorted(extruders, key = lambda extruder: extruder.getMetaDataEntry("position"))
+            extruder_count = len(global_container_stack.extruders)
+            extruders = []
+            if extruder_count > 1:
+                extruders = list(ExtruderManager.getInstance().getMachineExtruders(global_container_stack.getId()))
+                extruders = sorted(extruders, key = lambda extruder: extruder.getMetaDataEntry("position"))
 
             if not extruders:
                 extruders = [global_container_stack]