diff --git a/std/special/start.zig b/std/special/start.zig
index f8a018e0ae08319f0a3a6331189639336f5a435c..3427ff422dbcd7e40b8435b1b9216583407308a3 100644
--- a/std/special/start.zig
+++ b/std/special/start.zig
@@ -35,13 +35,13 @@ nakedcc fn _start() noreturn {
 
     switch (builtin.arch) {
         .x86_64 => {
-            argc_ptr = asm ("lea (%%rsp), %[argc]"
-                : [argc] "=r" (-> [*]usize)
+            argc_ptr = asm (""
+                : [argc] "={rsp}" (-> [*]usize)
             );
         },
         .i386 => {
-            argc_ptr = asm ("lea (%%esp), %[argc]"
-                : [argc] "=r" (-> [*]usize)
+            argc_ptr = asm (""
+                : [argc] "={esp}" (-> [*]usize)
             );
         },
         .aarch64, .aarch64_be => {