diff --git a/changelogs/fragments/adhoc_role_name_object_diff.yml b/changelogs/fragments/adhoc_role_name_object_diff.yml
new file mode 100644
index 000000000..7df31e9ed
--- /dev/null
+++ b/changelogs/fragments/adhoc_role_name_object_diff.yml
@@ -0,0 +1,4 @@
+---
+bugfixes:
+  - Fix "adhoc" role permission name in object diff.
+...
diff --git a/plugins/lookup/controller_object_diff.py b/plugins/lookup/controller_object_diff.py
index 7babf5e0b..5b168bd3c 100644
--- a/plugins/lookup/controller_object_diff.py
+++ b/plugins/lookup/controller_object_diff.py
@@ -230,7 +230,7 @@ def run(self, terms, variables=None, **kwargs):
                     item.update({"organizations": [item[item["resource_type"]]]})
                 if item["resource_type"] == "instance_group":
                     item.update({"instance_groups": [item[item["resource_type"]]]})
-                item.update({"role": item["name"].lower().replace(" ", "_")})
+                item.update({"role": item["name"].lower().replace(" ", "_").replace("ad_hoc", "adhoc")})
                 # Remove the extra fields
                 item.pop("users")
                 item.pop("teams")