Index: sources/storage/DriveWatcher.h
===================================================================
diff -u -r3aab84456cfbdc4c4f495975ba9b8968eb844309 -red85c796c2e3bd73aeda374d9a109750bd7732e3
--- sources/storage/DriveWatcher.h	(.../DriveWatcher.h)	(revision 3aab84456cfbdc4c4f495975ba9b8968eb844309)
+++ sources/storage/DriveWatcher.h	(.../DriveWatcher.h)	(revision ed85c796c2e3bd73aeda374d9a109750bd7732e3)
@@ -47,6 +47,8 @@
     const char *_usbDrive   = "";
     const int   _interval   = 1000; // in ms
 
+    const qint8 _minRequiredAvailableSpacePercent = 15;
+
     QThread    *_thread     = nullptr;
     bool        _init       = false;