diff --git a/sm4/asm_arm64.s b/sm4/asm_arm64.s
index 7314ce3..be73422 100644
--- a/sm4/asm_arm64.s
+++ b/sm4/asm_arm64.s
@@ -175,11 +175,11 @@ TEXT ·expandKeyAsm(SB),NOSPLIT,$0
 
   MOVW.P 4(R9), R19
   VMOV R19, x.S[0]
- // VEOR t1.B16, x.B16, x.B16
- // VEOR t2.B16, x.B16, x.B16
- // VEOR t3.B16, x.B16, x.B16
- // VAND x.B16, NIBBLE_MASK.B16, XTMP7.B16
- // VTBL XTMP7.B16, [M1L.B16], y.B16
+  VEOR t1.B16, x.B16, x.B16
+  VEOR t2.B16, x.B16, x.B16
+  VEOR t3.B16, x.B16, x.B16
+  VAND x.B16, NIBBLE_MASK.B16, XTMP7.B16
+  VTBL XTMP7.B16, [M1L.B16], y.B16
   //VSLI $-4, x.D2, x.D2
   //VAND x.B16, NIBBLE_MASK.B16, XTMP7.B16
   //VTBL XTMP7.B16, [M1H.B16], XTMP7.B16