diff --git a/simu/src/main.rs b/simu/src/main.rs
index 274932a..068d76d 100644
--- a/simu/src/main.rs
+++ b/simu/src/main.rs
@@ -306,7 +306,7 @@ fn main() -> Result<(), Error> {
             }
             #[cfg(feature = "debug")]
             {
-                let mut input = stdin().lines();
+                let mut input = std::io::stdin().lines();
                 loop {
                     {
                         println!(