diff --git a/cnudie/retrieve_async.py b/cnudie/retrieve_async.py
index 68a3e46b7..4d1b786c0 100644
--- a/cnudie/retrieve_async.py
+++ b/cnudie/retrieve_async.py
@@ -646,8 +646,8 @@ def create_default_component_descriptor_lookup(
 async def component_diff(
     left_component: ocm.Component | ocm.ComponentDescriptor,
     right_component: ocm.Component | ocm.ComponentDescriptor,
+    component_descriptor_lookup: ComponentDescriptorLookupById,
     ignore_component_names=(),
-    component_descriptor_lookup: ComponentDescriptorLookupById=None,
 ) -> cnudie.util.ComponentDiff:
     import cnudie.iter as ci
     import cnudie.iter_async as cia # late import to avoid cyclic dependencies
@@ -655,9 +655,6 @@ async def component_diff(
     left_component = cnudie.util.to_component(left_component)
     right_component = cnudie.util.to_component(right_component)
 
-    if not component_descriptor_lookup:
-        component_descriptor_lookup = create_default_component_descriptor_lookup()
-
     left_components = [
         component_node.component async for component_node in cia.iter(
             component=left_component,