diff --git a/compiler/gen_dev/src/generic64/x86_64.rs b/compiler/gen_dev/src/generic64/x86_64.rs
index 7a5ff4ec21..8247e63503 100644
--- a/compiler/gen_dev/src/generic64/x86_64.rs
+++ b/compiler/gen_dev/src/generic64/x86_64.rs
@@ -34,6 +34,7 @@ pub enum X86_64GeneralReg {
     R15 = 15,
 }
 impl X86_64GeneralReg {
+    #[allow(dead_code)]
     fn low_8bits_string(&self) -> &str {
         match self {
             X86_64GeneralReg::RAX => "al",