diff --git a/src/pavuapplication.cc b/src/pavuapplication.cc
index c8e5edd..e8520ec 100644
--- a/src/pavuapplication.cc
+++ b/src/pavuapplication.cc
@@ -30,7 +30,14 @@
 #include "pavucontrol.h"
 #include "mainwindow.h"
 
-PavuApplication::PavuApplication() : Gtk::Application("org.pulseaudio.pavucontrol", Gio::ApplicationFlags::APPLICATION_HANDLES_COMMAND_LINE) {
+PavuApplication::PavuApplication() :
+    Gtk::Application("org.pulseaudio.pavucontrol", Gio::ApplicationFlags::APPLICATION_HANDLES_COMMAND_LINE),
+    mainWindow(NULL),
+    retry(false),
+    maximize(false),
+    tab(0),
+    version(false),
+    m(NULL) {
 }
 
 /*
diff --git a/src/pavuapplication.h b/src/pavuapplication.h
index 4df722f..3589c5d 100644
--- a/src/pavuapplication.h
+++ b/src/pavuapplication.h
@@ -45,7 +45,7 @@ private:
     MainWindow* create_window();
     void on_hide_window(Gtk::Window* window);
 
-    pa_glib_mainloop *m = NULL;
+    pa_glib_mainloop *m;
 };