diff --git a/arch/nios2/cpu/start.S b/arch/nios2/cpu/start.S
index bb86bbf..54787c5 100644
--- a/arch/nios2/cpu/start.S
+++ b/arch/nios2/cpu/start.S
@@ -158,7 +158,7 @@ relocate_code:
 	ori	r6, r6, %lo(__bss_end)
 	beq	r5, r6, 5f
 
-4:	stwio	r0, 0(r5)
+4:	stw	r0, 0(r5)
 	addi	r5, r5, 4
 	bne	r5, r6, 4b
 5: