diff --git a/README.md b/README.md
index 701058db..bff8baa3 100644
--- a/README.md
+++ b/README.md
@@ -112,7 +112,7 @@ scriptGroups := []*transaction.ScriptGroup{
 			HashType: types.HashTypeType,
 			Args:     common.FromHex("0x3f1573b44218d4c12a91919a58a863be415a2bc3"),
 		},
-		GroupType:    transaction.ScriptTypeLock,
+		GroupType:    types.ScriptTypeLock,
 		InputIndices: []uint32{0},
 	},
 }