diff --git a/src/runtime/asm_amd64.s b/src/runtime/asm_amd64.s
index 13c8de499e..5d163da132 100644
--- a/src/runtime/asm_amd64.s
+++ b/src/runtime/asm_amd64.s
@@ -168,7 +168,7 @@ TEXT runtime·rt0_go(SB),NOSPLIT|TOPFRAME,$0
 	// create istack out of the given (operating system) stack.
 	// _cgo_init may update stackguard.
 	MOVQ	$runtime·g0(SB), DI
-	LEAQ	(-64*1024+104)(SP), BX
+	LEAQ	(-64*1024)(SP), BX
 	MOVQ	BX, g_stackguard0(DI)
 	MOVQ	BX, g_stackguard1(DI)
 	MOVQ	BX, (g_stack+stack_lo)(DI)