diff --git a/src/main.rs b/src/main.rs
index cfc8c41..9b443de 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -36,7 +36,7 @@ fn main() -> Result<()> {
         .collect_vec()
         .is_empty()
     {
-        return Err(anyhow!("dir out is not empty"));
+        return Err(anyhow!("dir register_interface is not empty"));
     };
     for (file, code) in files {
         DirBuilder::new()