diff --git a/imagehash_test.go b/imagehash_test.go
index 5af34e6..81f34e9 100644
--- a/imagehash_test.go
+++ b/imagehash_test.go
@@ -59,13 +59,13 @@ func TestNewImageHash(t *testing.T) {
 func TestNil(t *testing.T) {
 	hash := NewImageHash(0, AHash)
 	dis, err := hash.Distance(nil)
-	if dis != -1 {
-		t.Errorf("Distance is expected as %d but got %d", -1, dis)
-	}
 	expectedError := errors.New("other should not be nil")
 	if err != nil && err.Error() != expectedError.Error() {
 		t.Errorf("Expected err %s, actual %s", expectedError, err)
 	}
+	if dis != -1 {
+		t.Errorf("Distance is expected as %d but got %d", -1, dis)
+	}
 }
 
 func TestSerialization(t *testing.T) {