diff --git a/application/src/battery.h b/application/src/battery.h
index fc2cb5f..f9a759c 100644
--- a/application/src/battery.h
+++ b/application/src/battery.h
@@ -50,11 +50,11 @@ public slots:
     void updateData();
 
 private:
-    QFile* chargeFile;
-    QFile* chargerConnectedFile;
-    QFile* stateFile;
-    QFile* chargingEnabledFile;
-    Settings* settings;
+    QFile* chargeFile = nullptr;
+    QFile* chargerConnectedFile = nullptr;
+    QFile* stateFile = nullptr;
+    QFile* chargingEnabledFile = nullptr;
+    Settings* settings = nullptr;
 
     // Default values:
     int charge = 100; // 100% full
diff --git a/application/src/settings.h b/application/src/settings.h
index 0299050..73f065b 100644
--- a/application/src/settings.h
+++ b/application/src/settings.h
@@ -67,7 +67,7 @@ public:
     void setNotificationHighText(QString newText);
 
 private:
-    QSettings *mySettings;
+    QSettings *mySettings = nullptr;
 
     // Default values
     int lowAlert = 25;
diff --git a/service/src/battery.h b/service/src/battery.h
index 65b183f..d3aef4a 100644
--- a/service/src/battery.h
+++ b/service/src/battery.h
@@ -53,11 +53,11 @@ public slots:
     void shutdown();
 
 private:
-    QFile* chargeFile;
-    QFile* chargerConnectedFile;
-    QFile* stateFile;
-    QFile* chargingEnabledFile = Q_NULLPTR;
-    Settings* settings;
+    QFile *chargeFile = nullptr;
+    QFile *chargerConnectedFile = nullptr;
+    QFile *stateFile = nullptr;
+    QFile *chargingEnabledFile = nullptr;
+    Settings *settings = nullptr;
     QTimer *updateTimer = nullptr;
     QTimer *notifyTimer = nullptr;
     Notification *notification = nullptr;