diff --git a/sm4/cbc_cipher_asm_arm64.s b/sm4/cbc_cipher_asm_arm64.s
index 3d974be..d860890 100644
--- a/sm4/cbc_cipher_asm_arm64.s
+++ b/sm4/cbc_cipher_asm_arm64.s
@@ -112,7 +112,7 @@ TEXT ·decryptBlocksChain(SB),NOSPLIT,$0
 	MOVD src_len+40(FP), srcPtrLen
 	MOVD iv+56(FP), R6
 	MOVD rk, rkSave
-	VLD1 (R6), [IV]
+	VLD1 (R6), [IV.B16]
 
 cbcSm4Octets:
 	CMP	$128, srcPtrLen