diff --git a/sm3/sm3blocks_ppc64x.s b/sm3/sm3blocks_ppc64x.s
index bde2fed..4c73623 100644
--- a/sm3/sm3blocks_ppc64x.s
+++ b/sm3/sm3blocks_ppc64x.s
@@ -362,6 +362,9 @@ end:
 	STXVW4X c, (R0)(R4)
 	STXVW4X g, (R16)(R4)
 	MOVD (R17)(digPtr), R4
+	MOVD $0x79cc4519, R19
+	MTVSRWZ R19, d
+	VSPLTW $3, d, d
 	STXVW4X d, (R0)(R4)
 	STXVW4X h, (R16)(R4)