diff --git a/cura/Machines/VariantNode.py b/cura/Machines/VariantNode.py
index d34580d465..fa0c61bd3d 100644
--- a/cura/Machines/VariantNode.py
+++ b/cura/Machines/VariantNode.py
@@ -82,6 +82,10 @@ class VariantNode(ContainerNode):
         for base_material, material_node in self.materials.items():
             if self.machine.preferred_material in base_material and approximate_diameter == int(material_node.getMetaDataEntry("approximate_diameter")):
                 return material_node
+        # First fallback: Choose any material with matching diameter.
+        for material_node in self.materials.values():
+            if approximate_diameter == int(material_node.getMetaDataEntry("approximate_diameter")):
+                return material_node
         fallback = next(iter(self.materials.values()))  # Should only happen with empty material node.
         Logger.log("w", "Could not find preferred material {preferred_material} with diameter {diameter} for variant {variant_id}, falling back to {fallback}.".format(
             preferred_material = self.machine.preferred_material,