diff --git a/crypto/aes/asm/aesv8-armx.pl b/crypto/aes/asm/aesv8-armx.pl
index c6d489dd2a..c4481b56b1 100755
--- a/crypto/aes/asm/aesv8-armx.pl
+++ b/crypto/aes/asm/aesv8-armx.pl
@@ -567,9 +567,9 @@ $code.=<<___;
 	veor	$tmp0,$tmp0,$dat0
 	veor	$tmp1,$tmp1,$dat1
 	 vorr	$dat0,$in0,$in0
-	vst1.8	{$tmp0},[$out],#32
+	vst1.8	{$tmp0},[$out],#16
 	 vorr	$dat1,$in1,$in1
-	vst1.8	{$tmp1},[$out],#32
+	vst1.8	{$tmp1},[$out],#16
 	b.hs	.Loop2x_cbc_dec
 
 	adds	$len,$len,#32