diff --git a/sm4/asm_arm64.s b/sm4/asm_arm64.s
index 9b4b9b0..bb71c9f 100644
--- a/sm4/asm_arm64.s
+++ b/sm4/asm_arm64.s
@@ -184,7 +184,7 @@ TEXT ·expandKeyAsm(SB),NOSPLIT,$0
   VAND x.B16, NIBBLE_MASK.B16, XTMP7.B16
   VTBL XTMP7.B16, [M1H.B16], XTMP7.B16
   VEOR y.B16, XTMP7.B16, x.B16
-  VTBL INVERSE_SHIFT_ROWS.B16, [x.B16], x.B16
+  //VTBL INVERSE_SHIFT_ROWS.B16, [x.B16], x.B16
   
   VEOR x.B16, t0.B16, t0.B16