diff --git a/internal/sm2ec/sm2p256_asm_test.go b/internal/sm2ec/sm2p256_asm_test.go
index 559f63c..0acd6b2 100644
--- a/internal/sm2ec/sm2p256_asm_test.go
+++ b/internal/sm2ec/sm2p256_asm_test.go
@@ -205,13 +205,21 @@ func TestPointDouble(t *testing.T) {
 	}
 
 	if hex.EncodeToString(double1.Bytes()) != "0497662389f36ce643a47dcf644f700651e988794843797b0c4a69c806e78615c2cd4d9449aea5cac5328b8d67d4ae956f5eb06c4515ff01bd17eef58bf866b33f" {
-		t.Errorf("PointDouble6Times is incorrect %x", double1.Bytes())
+		t.Errorf("PointDouble6Times 1 is incorrect %x", double1.Bytes())
+	}
+
+	if hex.EncodeToString(double2.Bytes()) != "0497662389f36ce643a47dcf644f700651e988794843797b0c4a69c806e78615c2cd4d9449aea5cac5328b8d67d4ae956f5eb06c4515ff01bd17eef58bf866b33f" {
+		t.Errorf("PointDouble6Times 2 is incorrect %x", double2.Bytes())
 	}
 }
 
 func TestPointAdd(t *testing.T) {
 	p := NewSM2P256Point().SetGenerator()
 	var p1, p2, sum1, sum2 SM2P256Point
+	ret := p256PointAddAsm(&sum1, p, p)
+	if ret != 1 {
+		t.Error("Should return 1")
+	}
 	p256PointDoubleAsm(&p1, p)
 	p256PointAddAsm(&sum1, p, &p1)