diff --git a/src/opt/opt_utils.rs b/src/opt/opt_utils.rs
index 9199548..30cc45d 100644
--- a/src/opt/opt_utils.rs
+++ b/src/opt/opt_utils.rs
@@ -1,3 +1,5 @@
 //! Utilities for implementing optimizations.
 //!
 //! You can add here utilities commonly used in the implementation of multiple optimizations.
+
+#![allow(dead_code)]