diff --git a/src/system/libroot/posix/arch/arm/sigsetjmp.S b/src/system/libroot/posix/arch/arm/sigsetjmp.S
index a0f59ad758..bf77eadf4e 100644
--- a/src/system/libroot/posix/arch/arm/sigsetjmp.S
+++ b/src/system/libroot/posix/arch/arm/sigsetjmp.S
@@ -26,14 +26,13 @@ FUNCTION_END(sigsetjmp)
 
 /* int setjmp(jmp_buf buffer) */
 FUNCTION(setjmp):
-	stmdb   sp!, {r4, lr}
         stmia   r0, {r0-r14}
         str     lr,[r0, #60]
         mrs     r1,cpsr
         str     r1,[r0,#64]
         ldr     r1,[r0,#4]
         mov     r0, #0
-	ldmia   sp!, {r4, pc}
+	bx	lr
 FUNCTION_END(setjmp)
 
 #pragma weak _setjmp=setjmp