diff --git a/generators/chipyard/src/main/scala/Subsystem.scala b/generators/chipyard/src/main/scala/Subsystem.scala
index 6a07ff64..e98a51bc 100644
--- a/generators/chipyard/src/main/scala/Subsystem.scala
+++ b/generators/chipyard/src/main/scala/Subsystem.scala
@@ -65,6 +65,7 @@ trait CanHaveChosenInDTS { this: BaseSubsystem =>
           t.uarts.foreach(u => Resource(chosen, "uart").bind(ResourceAlias(u.device.label)))
         }
       }
+      case _ =>
     }
   }
 }