diff --git a/source/Genus/CheckableItem.cpp b/source/Genus/CheckableItem.cpp
index 9d67826..9056a4b 100644
--- a/source/Genus/CheckableItem.cpp
+++ b/source/Genus/CheckableItem.cpp
@@ -1,42 +1,42 @@
 #include "CheckableItem.h"
 
 CheckableItem::CheckableItem(const std::string &text)
-    : m_text(text)
+	: m_text(text)
 {
 }
 
 std::string CheckableItem::getText() const
 {
-    return m_text;
+	return m_text;
 }
 
 bool CheckableItem::isChecked() const
 {
-    return m_checked;
+	return m_checked;
 }
 
 void CheckableItem::setState(bool checked)
 {
-    m_checked = checked;
+	m_checked = checked;
 }
 
 void CheckableItem::write(QJsonObject &json) const
 {
-    json["text"] = m_text.c_str();
-    json["checked"] = m_checked;
+	json["text"] = m_text.c_str();
+	json["checked"] = m_checked;
 }
 
 void CheckableItem::read(const QJsonObject &json)
 {
-    const auto &text = json["text"];
-    if (text.isString())
-    {
-        m_text = text.toString().toStdString();
-    }
+	const auto &text = json["text"];
+	if (text.isString())
+	{
+		m_text = text.toString().toStdString();
+	}
 
-    const auto &checked = json["checked"];
-    if (checked.isBool())
-    {
-        m_checked = checked.toBool();
-    }
+	const auto &checked = json["checked"];
+	if (checked.isBool())
+	{
+		m_checked = checked.toBool();
+	}
 }
diff --git a/source/Genus/CheckableItem.h b/source/Genus/CheckableItem.h
index f097bdf..912ca14 100644
--- a/source/Genus/CheckableItem.h
+++ b/source/Genus/CheckableItem.h
@@ -7,17 +7,17 @@
 class CheckableItem
 {
 private:
-    bool m_checked = false;
-    std::string m_text;
+	bool m_checked = false;
+	std::string m_text;
 
 public:
-    CheckableItem() = default;
-    CheckableItem(const std::string &text);
+	CheckableItem() = default;
+	CheckableItem(const std::string &text);
 
-    std::string getText() const;
-    bool isChecked() const;
-    void setState(bool checked);
+	std::string getText() const;
+	bool isChecked() const;
+	void setState(bool checked);
 
-    void write(QJsonObject &json) const;
-    void read(const QJsonObject &json);
+	void write(QJsonObject &json) const;
+	void read(const QJsonObject &json);
 };
diff --git a/source/Genus/CheckableItems.cpp b/source/Genus/CheckableItems.cpp
index c3348a2..30532f3 100644
--- a/source/Genus/CheckableItems.cpp
+++ b/source/Genus/CheckableItems.cpp
@@ -4,33 +4,33 @@
 
 CheckableItems::CheckableItems(std::initializer_list<std::string> itemNames)
 {
-    for (const auto &itemName : itemNames)
-    {
-        emplace_back(itemName);
-    }
+	for (const auto &itemName : itemNames)
+	{
+		emplace_back(itemName);
+	}
 }
 
 void CheckableItems::write(QJsonArray &json) const
 {
-    for (const auto &item : *this)
-    {
-        QJsonObject itemObject;
-        item.write(itemObject);
-        json.append(itemObject);
-    }
+	for (const auto &item : *this)
+	{
+		QJsonObject itemObject;
+		item.write(itemObject);
+		json.append(itemObject);
+	}
 }
 
 void CheckableItems::read(const QJsonArray &json)
 {
-    clear();
+	clear();
 
-    for (const auto &itemObject : json)
-    {
-        if (itemObject.isObject())
-        {
-            CheckableItem item;
-            item.read(itemObject.toObject());
-            emplace_back(item);
-        }
-    }
+	for (const auto &itemObject : json)
+	{
+		if (itemObject.isObject())
+		{
+			CheckableItem item;
+			item.read(itemObject.toObject());
+			emplace_back(item);
+		}
+	}
 }
diff --git a/source/Genus/CheckableItems.h b/source/Genus/CheckableItems.h
index 2a1a77d..164f829 100644
--- a/source/Genus/CheckableItems.h
+++ b/source/Genus/CheckableItems.h
@@ -3,13 +3,13 @@
 #include "CheckableItem.h"
 
 #include <QJsonObject>
-#include <map>
+#include <vector>
 
 class CheckableItems : public std::vector<CheckableItem>
 {
 public:
-    CheckableItems(std::initializer_list<std::string> itemNames);
+	CheckableItems(std::initializer_list<std::string> itemNames);
 
-    void write(QJsonArray &json) const;
-    void read(const QJsonArray &json);
+	void write(QJsonArray &json) const;
+	void read(const QJsonArray &json);
 };
diff --git a/source/Genus/GenusModel.cpp b/source/Genus/GenusModel.cpp
index 229ea31..7d2321e 100644
--- a/source/Genus/GenusModel.cpp
+++ b/source/Genus/GenusModel.cpp
@@ -105,35 +105,35 @@ QVariant GenusModel::headerData(
 
 void GenusModel::write(QJsonObject &json) const
 {
-    QJsonArray tiere;
+	QJsonArray tiere;
 	m_tiere.write(tiere);
 	json["Tiere"] = tiere;
 
-    QJsonArray futter;
+	QJsonArray futter;
 	m_futter.write(futter);
 	json["Futter"] = futter;
 
-    QJsonArray zirkus;
+	QJsonArray zirkus;
 	m_zirkus.write(zirkus);
 	json["Zirkus"] = zirkus;
 }
 
 void GenusModel::read(const QJsonObject &json)
 {
-    if (json["Tiere"].isArray())
-    {
-        m_tiere.read(json["Tiere"].toArray());
-    }
+	if (json["Tiere"].isArray())
+	{
+		m_tiere.read(json["Tiere"].toArray());
+	}
 
-    if (json["Futter"].isArray())
-    {
-        m_futter.read(json["Futter"].toArray());
-    }
+	if (json["Futter"].isArray())
+	{
+		m_futter.read(json["Futter"].toArray());
+	}
 
-    if (json["Zirkus"].isArray())
-    {
-        m_zirkus.read(json["Zirkus"].toArray());
-    }
+	if (json["Zirkus"].isArray())
+	{
+		m_zirkus.read(json["Zirkus"].toArray());
+	}
 }
 
 bool GenusModel::isValidIndex(const QModelIndex &index) const
@@ -141,11 +141,11 @@ bool GenusModel::isValidIndex(const QModelIndex &index) const
 	switch (index.row())
 	{
 		case 0:
-            return index.column() < m_tiere.size();
+			return index.column() < m_tiere.size();
 		case 1:
-            return index.column() < m_futter.size();
+			return index.column() < m_futter.size();
 		case 2:
-            return index.column() < m_zirkus.size();
+			return index.column() < m_zirkus.size();
 		default:
 			return false;
 	}
@@ -188,21 +188,21 @@ const CheckableItems &GenusModel::getItems(const QModelIndex &index) const
 CheckableItem &GenusModel::getItem(const QModelIndex &index)
 {
 	auto &items = getItems(index);
-    if (index.column() < items.size())
-    {
-        return items.at(index.column());
-    }
+	if (index.column() < items.size())
+	{
+		return items.at(index.column());
+	}
 
 	throw std::runtime_error("invalid index");
 }
 
 const CheckableItem &GenusModel::getItem(const QModelIndex &index) const
 {
-    auto &items = getItems(index);
-    if (index.column() < items.size())
-    {
-        return items.at(index.column());
-    }
+	auto &items = getItems(index);
+	if (index.column() < items.size())
+	{
+		return items.at(index.column());
+	}
 
 	throw std::runtime_error("invalid index");
 }
diff --git a/source/Genus/GenusModel.h b/source/Genus/GenusModel.h
index 436f2a3..54b1d4c 100644
--- a/source/Genus/GenusModel.h
+++ b/source/Genus/GenusModel.h
@@ -10,9 +10,11 @@ class GenusModel : public QAbstractTableModel
 	Q_OBJECT
 
 private:
-    CheckableItems m_tiere = { "Tiger", "Bär", "Katze", "Pferd", "Gans", "Elefant", "Katze", "Hund" };
-    CheckableItems m_futter = { "Salat", "Fleisch", "Knocken", "Banane", "Apfel", "Möhre", "Honig", "Zucker" };
-    CheckableItems m_zirkus = { "Kiste", "Holz", "Vorhang", "Baum" };
+	CheckableItems m_tiere = {
+		"Tiger", "Bär", "Katze", "Pferd", "Gans", "Elefant", "Katze", "Hund"};
+	CheckableItems m_futter = {"Salat", "Fleisch", "Knocken", "Banane", "Apfel",
+		"Möhre", "Honig", "Zucker"};
+	CheckableItems m_zirkus = {"Kiste", "Holz", "Vorhang", "Baum"};
 
 public:
 	GenusModel(QObject *parent);
diff --git a/source/Genus/GenusWidget.cpp b/source/Genus/GenusWidget.cpp
index 41faea5..4141cb0 100644
--- a/source/Genus/GenusWidget.cpp
+++ b/source/Genus/GenusWidget.cpp
@@ -9,15 +9,15 @@ GenusWidget::GenusWidget(QWidget *parent)
 {
 	ui->setupUi(this);
 
-    ui->genusTableView->horizontalHeader()->hide();
+	ui->genusTableView->horizontalHeader()->hide();
 }
 
 GenusWidget::~GenusWidget()
 {
-    delete ui;
+	delete ui;
 }
 
 void GenusWidget::setModel(GenusModel *model)
 {
-    ui->genusTableView->setModel(model);
+	ui->genusTableView->setModel(model);
 }
diff --git a/source/Genus/GenusWidget.h b/source/Genus/GenusWidget.h
index b8ae706..ab6ea95 100644
--- a/source/Genus/GenusWidget.h
+++ b/source/Genus/GenusWidget.h
@@ -19,5 +19,5 @@ public:
 	GenusWidget(QWidget *parent = nullptr);
 	~GenusWidget();
 
-    void setModel(GenusModel *model);
+	void setModel(GenusModel *model);
 };