diff --git a/lib/std/start.zig b/lib/std/start.zig
index ea6f347bd6658ff9b99885e12baaa1f2d292664f..5c94a4b591b885109c14f9dbb5406f1169cfd1ad 100644
--- a/lib/std/start.zig
+++ b/lib/std/start.zig
@@ -283,7 +283,9 @@ fn _start() callconv(.Naked) noreturn {
             \\ mov fp, #0
             \\ mov lr, #0
             \\ mov a1, sp
-            \\ and sp, #-16
+            \\ mov ip, sp
+            \\ and ip, ip, #-16
+            \\ mov sp, ip
             \\ b %[posixCallMainAndExit]
             ,
             .csky =>