diff --git a/src/arch/aarch64.rs b/src/arch/aarch64.rs
index d8f9471..6d22ca4 100644
--- a/src/arch/aarch64.rs
+++ b/src/arch/aarch64.rs
@@ -6,7 +6,7 @@ use super::error::{Error, Result};
 macro_rules! syscall {
     ($($name:ident($a:ident, $($b:ident, $($c:ident, $($d:ident, $($e:ident, $($f:ident, )?)?)?)?)?);)+) => {
         $(
-            pub unsafe fn $name(mut $a: usize, $(mut $b: usize, $($c: usize, $($d: usize, $($e: usize, $($f: usize)?)?)?)?)?) -> Result<usize> {
+            pub unsafe fn $name($a: usize, $($b: usize, $($c: usize, $($d: usize, $($e: usize, $($f: usize)?)?)?)?)?) -> Result<usize> {
                 let ret: usize;
 
                 asm!(