diff --git a/cura/Machines/MaterialNode.py b/cura/Machines/MaterialNode.py
index fe20af2cd5..8f04a90204 100644
--- a/cura/Machines/MaterialNode.py
+++ b/cura/Machines/MaterialNode.py
@@ -68,13 +68,13 @@ class MaterialNode(ContainerNode):
                 # Need to find the qualities that specify a material profile with the same material type.
                 qualities = container_registry.findInstanceContainersMetadata(type = "quality", definition = self.variant.machine.quality_definition, variant = self.variant.variant_name, material = self.container_id)  # First try by exact material ID.
             else:
-                qualities = container_registry.findInstanceContainersMetadata(type="quality", definition=self.variant.machine.quality_definition, material=self.container_id)
+                qualities = container_registry.findInstanceContainersMetadata(type = "quality", definition = self.variant.machine.quality_definition, material = self.container_id)
             if not qualities:
                 my_material_type = self.material_type
                 if self.variant.machine.has_variants:
                     qualities_any_material = container_registry.findInstanceContainersMetadata(type = "quality", definition = self.variant.machine.quality_definition, variant = self.variant.variant_name)
                 else:
-                    qualities_any_material = container_registry.findInstanceContainersMetadata(type="quality", definition = self.variant.machine.quality_definition)
+                    qualities_any_material = container_registry.findInstanceContainersMetadata(type = "quality", definition = self.variant.machine.quality_definition)
                 for material_metadata in container_registry.findInstanceContainersMetadata(type = "material", material = my_material_type):
                     qualities.extend((quality for quality in qualities_any_material if quality.get("material") == material_metadata["id"]))