diff --git a/sm4/cipher_asm_fuzzy_test.go b/sm4/cipher_asm_fuzzy_test.go
index 87d2b4a..d7fcac2 100644
--- a/sm4/cipher_asm_fuzzy_test.go
+++ b/sm4/cipher_asm_fuzzy_test.go
@@ -5,6 +5,7 @@ package sm4
 
 import (
 	"crypto/rand"
+	"fmt"
 	"io"
 	"reflect"
 	"testing"
@@ -35,6 +36,7 @@ func TestExpandKey(t *testing.T) {
 		io.ReadFull(rand.Reader, key)
 		expandKeyGo(key, encRes1, decRes1)
 		expandKeyAsm(&key[0], &ck[0], &encRes2[0], &decRes2[0])
+		fmt.Printf("expected=%v, result=%v\n", encRes1, encRes2)
 		if !reflect.DeepEqual(encRes1, encRes2) {
 			t.Fatalf("expected=%v, result=%v\n", encRes1, encRes2)
 		}