diff --git a/sm4/asm_ppc64x.s b/sm4/asm_ppc64x.s
index 66fc591..dcf6d58 100644
--- a/sm4/asm_ppc64x.s
+++ b/sm4/asm_ppc64x.s
@@ -196,7 +196,7 @@ ksLoop:
 	SM4_EXPANDKEY_ROUND(V4, V7, V8, V9, V3, V0, V1, V2, V5)
 	STXVW4X V5, (R5)
 	VPERM V5, V6, REVERSE_WORDS, V5
-	STXVW4X V5, (R6)
+	STXVW4X REVERSE_WORDS, (R6)
 /*	
 	ADD $16, R5
 	ADD $16, R4