diff --git a/plugins/lunchmealplugin/lunchmealsettings.cpp b/plugins/lunchmealplugin/lunchmealsettings.cpp
index 9e09a0b..9c3dcc1 100644
--- a/plugins/lunchmealplugin/lunchmealsettings.cpp
+++ b/plugins/lunchmealplugin/lunchmealsettings.cpp
@@ -2,7 +2,13 @@
 
 #include "zeiterfassungsettings.h"
 
-LunchMealSettings::LunchMealSettings(ZeiterfassungSettings &settings) :
+const QString LunchMealSettings::m_url("LunchMealPlugin/url");
+const QString LunchMealSettings::m_dateFormat("LunchMealPlugin/dateFormat");
+const QString LunchMealSettings::m_defaultUrl("https://brunner.ninja/lunch/%0.txt");
+const QString LunchMealSettings::m_defaultDateFormat("yyyy-MM-dd");
+
+LunchMealSettings::LunchMealSettings(ZeiterfassungSettings &settings, QObject *parent) :
+    QObject(parent),
     m_settings(settings)
 {
 
@@ -10,22 +16,28 @@ LunchMealSettings::LunchMealSettings(ZeiterfassungSettings &settings) :
 
 QString LunchMealSettings::url() const
 {
-    return m_settings.value(QStringLiteral("LunchMealPlugin/url"),
-                            QStringLiteral("https://brunner.ninja/lunch/%0.txt"))
-            .toString();
+    return m_settings.value(m_url, m_defaultUrl).toString();
 }
 
 void LunchMealSettings::setUrl(const QString &url)
 {
-    m_settings.setValue(QStringLiteral("LunchMealPlugin/url"), url);
+    if(this->url() != url)
+    {
+        m_settings.setValue(QStringLiteral("LunchMealPlugin/url"), url);
+        Q_EMIT urlChanged(url);
+    }
 }
 
 QString LunchMealSettings::dateFormat() const
 {
-    return m_settings.value(QStringLiteral("LunchMealPlugin/dateFormat"), QStringLiteral("yyyy-MM-dd")).toString();
+    return m_settings.value(m_dateFormat, m_defaultDateFormat).toString();
 }
 
 void LunchMealSettings::setDateFormat(const QString &dateFormat)
 {
-    m_settings.setValue(QStringLiteral("LunchMealPlugin/dateFormat"), dateFormat);
+    if(this->dateFormat() != dateFormat)
+    {
+        m_settings.setValue(QStringLiteral("LunchMealPlugin/dateFormat"), dateFormat);
+        Q_EMIT dateFormatChanged(dateFormat);
+    }
 }
diff --git a/plugins/lunchmealplugin/lunchmealsettings.h b/plugins/lunchmealplugin/lunchmealsettings.h
index 6d07af7..daa3d2b 100644
--- a/plugins/lunchmealplugin/lunchmealsettings.h
+++ b/plugins/lunchmealplugin/lunchmealsettings.h
@@ -1,14 +1,19 @@
 #ifndef LUNCHMEALSETTINGS_H
 #define LUNCHMEALSETTINGS_H
 
+#include <QObject>
 #include <QUrl>
 
 class ZeiterfassungSettings;
 
-class LunchMealSettings
+class LunchMealSettings : public QObject
 {
+    Q_OBJECT
+    Q_PROPERTY(QString url READ url WRITE setUrl NOTIFY urlChanged)
+    Q_PROPERTY(QString dateFormat READ dateFormat WRITE setDateFormat NOTIFY dateFormatChanged)
+
 public:
-    LunchMealSettings(ZeiterfassungSettings &settings);
+    LunchMealSettings(ZeiterfassungSettings &settings, QObject *parent = Q_NULLPTR);
 
     // no QString becuase placeholder %0 encodes wrong in urls!
     QString url() const;
@@ -17,8 +22,17 @@ public:
     QString dateFormat() const;
     void setDateFormat(const QString &dateFormat);
 
+Q_SIGNALS:
+    void urlChanged(const QString &url);
+    void dateFormatChanged(const QString &dateFormat);
+
 private:
     ZeiterfassungSettings &m_settings;
+
+    static const QString m_url;
+    static const QString m_dateFormat;
+    static const QString m_defaultUrl;
+    static const QString m_defaultDateFormat;
 };
 
 #endif // LUNCHMEALSETTINGS_H