diff --git a/libs/walproposer/build.rs b/libs/walproposer/build.rs
index 2805429bac..69a8a3d583 100644
--- a/libs/walproposer/build.rs
+++ b/libs/walproposer/build.rs
@@ -6,6 +6,13 @@ use std::{env, path::PathBuf, process::Command};
 use anyhow::{anyhow, Context};
 use bindgen::CargoCallbacks;
 
+#[cfg(debug_assertions)]
+pub(crate) fn enable_build_sanitizers_in_debug() {
+    println!("cargo:rustc-link-arg=-fsanitize=address");
+    println!("cargo:rustc-link-arg=-fsanitize=undefined");
+    println!("cargo:rustc-link-arg=-static-libsan");
+}
+
 fn main() -> anyhow::Result<()> {
     // Tell cargo to invalidate the built crate whenever the wrapper changes
     println!("cargo:rerun-if-changed=bindgen_deps.h");
@@ -115,10 +122,3 @@ fn main() -> anyhow::Result<()> {
 
     Ok(())
 }
-
-#[cfg(debug_assertions)]
-pub(crate) fn enable_build_sanitizers_in_debug() {
-    println!("cargo:rustc-link-arg=-fsanitize=address");
-    println!("cargo:rustc-link-arg=-fsanitize=undefined");
-    println!("cargo:rustc-link-arg=-static-libsan");
-}