diff --git a/auditlog/registry.py b/auditlog/registry.py
index 1f8166b..38e22a4 100644
--- a/auditlog/registry.py
+++ b/auditlog/registry.py
@@ -141,7 +141,7 @@ class AuditlogModelRegistry:
             return lambda cls: registrar(cls)
         else:
             # Otherwise, just register the model.
-            registrar(model)
+            return registrar(model)
 
     def contains(self, model: ModelBase) -> bool:
         """