diff --git a/plugins/XmlMaterialProfile/XmlMaterialProfile.py b/plugins/XmlMaterialProfile/XmlMaterialProfile.py
index 53659f14bb..b1b065db70 100644
--- a/plugins/XmlMaterialProfile/XmlMaterialProfile.py
+++ b/plugins/XmlMaterialProfile/XmlMaterialProfile.py
@@ -127,7 +127,7 @@ class XmlMaterialProfile(UM.Settings.InstanceContainer):
 
             variant = container.getMetaDataEntry("variant")
             if variant:
-                if variant not in machine_nozzle_map:
+                if definition_id not in machine_nozzle_map:
                     machine_nozzle_map[definition_id] = []
                 machine_nozzle_map[definition_id].append(container)