diff --git a/logger/logger.go b/logger/logger.go
index ae7c22c9..694adedc 100644
--- a/logger/logger.go
+++ b/logger/logger.go
@@ -100,8 +100,9 @@ type logger struct {
 
 // LogMode log mode
 func (l *logger) LogMode(level LogLevel) Interface {
-	l.LogLevel = level
-	return l
+	newlogger := *l
+	newlogger.LogLevel = level
+	return &newlogger
 }
 
 // Info print info
diff --git a/tests/named_polymorphic_test.go b/tests/named_polymorphic_test.go
index 7af548a4..95b8ec7d 100644
--- a/tests/named_polymorphic_test.go
+++ b/tests/named_polymorphic_test.go
@@ -20,7 +20,7 @@ func TestNamedPolymorphic(t *testing.T) {
 	DB.Save(&hamster)
 
 	hamster2 := Hamster{}
-	DB.Debug().Preload("PreferredToy").Preload("OtherToy").Find(&hamster2, hamster.Id)
+	DB.Preload("PreferredToy").Preload("OtherToy").Find(&hamster2, hamster.Id)
 
 	if hamster2.PreferredToy.ID != hamster.PreferredToy.ID || hamster2.PreferredToy.Name != hamster.PreferredToy.Name {
 		t.Errorf("Hamster's preferred toy failed to preload")