diff --git a/libs/walproposer/build.rs b/libs/walproposer/build.rs
index e858b2d0f6..322c2666e5 100644
--- a/libs/walproposer/build.rs
+++ b/libs/walproposer/build.rs
@@ -29,9 +29,7 @@ fn main() -> anyhow::Result<()> {
     let pgxn_neon = std::fs::canonicalize(pgxn_neon)?;
     let pgxn_neon = pgxn_neon.to_str().ok_or(anyhow!("Bad non-UTF path"))?;
 
-    println!("cargo:rustc-link-arg=-fsanitize=address");
-    println!("cargo:rustc-link-arg=-fsanitize=undefined");
-    println!("cargo:rustc-link-arg=-static-libsan");
+    enable_build_sanitizers_in_debug();
     println!("cargo:rustc-link-lib=static=pgport");
     println!("cargo:rustc-link-lib=static=pgcommon");
     println!("cargo:rustc-link-lib=static=walproposer");
@@ -117,3 +115,10 @@ fn main() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+#[cfg(debug_assertions)]
+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");
+}