diff --git a/passes/cmds/splitfanout.cc b/passes/cmds/splitfanout.cc
index 83c103819..2a7f5ad04 100644
--- a/passes/cmds/splitfanout.cc
+++ b/passes/cmds/splitfanout.cc
@@ -192,7 +192,7 @@ struct SplitfanoutPass : public Pass {
 					count_split_pre, log_id(module), count_split_post);
 		}
 
-		Pass::call(design, "clean");
+		Pass::call(design, "clean *");
 	}
 } SplitfanoutPass;