diff --git a/app/preferenceeditor.cpp b/app/preferenceeditor.cpp
index 44b0ae1..03b3237 100644
--- a/app/preferenceeditor.cpp
+++ b/app/preferenceeditor.cpp
@@ -1,35 +1,35 @@
-#include "preferenceeditor.h"
-#include "ui_preferenceeditor.h"
-
-PreferenceEditor::PreferenceEditor(QWidget *parent)
-    : QDialog(parent)
-    , ui(new Ui::PreferenceEditor)
-{
-    ui->setupUi(this);
-
-    ui->frame_View->show();
-    ui->frame_TreeWidget->hide();
-    ui->frame_FileEditors->hide();
-
-    connect(ui->listWidget_Categories, &QListWidget::itemSelectionChanged, this, [this]() {
-        const QString itemText = ui->listWidget_Categories->selectedItems().first()->text();
-        if (itemText == "View") {
-            ui->frame_View->show();
-            ui->frame_TreeWidget->hide();
-            ui->frame_FileEditors->hide();
-        } else if (itemText == "Tree Widget") {
-            ui->frame_View->hide();
-            ui->frame_TreeWidget->show();
-            ui->frame_FileEditors->hide();
-        } else if (itemText == "File Editors") {
-            ui->frame_View->hide();
-            ui->frame_TreeWidget->hide();
-            ui->frame_FileEditors->show();
-        }
-    });
-}
-
-PreferenceEditor::~PreferenceEditor()
-{
-    delete ui;
-}
+#include "preferenceeditor.h"
+#include "ui_preferenceeditor.h"
+
+PreferenceEditor::PreferenceEditor(QWidget *parent)
+    : QDialog(parent)
+    , ui(new Ui::PreferenceEditor)
+{
+    ui->setupUi(this);
+
+    ui->frame_View->show();
+    ui->frame_TreeWidget->hide();
+    ui->frame_FileEditors->hide();
+
+    connect(ui->listWidget_Categories, &QListWidget::itemSelectionChanged, this, [this]() {
+        const QString itemText = ui->listWidget_Categories->selectedItems().first()->text();
+        if (itemText == "View") {
+            ui->frame_View->show();
+            ui->frame_TreeWidget->hide();
+            ui->frame_FileEditors->hide();
+        } else if (itemText == "Tree Widget") {
+            ui->frame_View->hide();
+            ui->frame_TreeWidget->show();
+            ui->frame_FileEditors->hide();
+        } else if (itemText == "File Editors") {
+            ui->frame_View->hide();
+            ui->frame_TreeWidget->hide();
+            ui->frame_FileEditors->show();
+        }
+    });
+}
+
+PreferenceEditor::~PreferenceEditor()
+{
+    delete ui;
+}