diff --git a/cura/Machines/QualityChangesGroup.py b/cura/Machines/QualityChangesGroup.py
index ad320a7006..5ff5af3657 100644
--- a/cura/Machines/QualityChangesGroup.py
+++ b/cura/Machines/QualityChangesGroup.py
@@ -2,6 +2,7 @@
 # Cura is released under the terms of the LGPLv3 or higher.
 
 from UM.Application import Application
+from UM.ConfigurationErrorMessage import ConfigurationErrorMessage
 
 from .QualityGroup import QualityGroup
 
@@ -13,14 +14,14 @@ class QualityChangesGroup(QualityGroup):
 
     def addNode(self, node: "QualityNode"):
         extruder_position = node.metadata.get("position")
+
+        if extruder_position is None and self.node_for_global is not None or extruder_position in self.nodes_for_extruders: #We would be overwriting another node.
+            ConfigurationErrorMessage.getInstance().addFaultyContainers(node.metadata["id"])
+            return
+
         if extruder_position is None: #Then we're a global quality changes profile.
-            if self.node_for_global is not None:
-                raise RuntimeError("{group} tries to overwrite the existing node_for_global {original_global} with {new_global}".format(group = self, original_global = self.node_for_global, new_global = node))
             self.node_for_global = node
         else: #This is an extruder's quality changes profile.
-            if extruder_position in self.nodes_for_extruders:
-                raise RuntimeError("%s tries to overwrite the existing nodes_for_extruders position [%s] %s with %s" %
-                                   (self, extruder_position, self.node_for_global, node))
             self.nodes_for_extruders[extruder_position] = node
 
     def __str__(self) -> str: