Index: sources/storage/logger.h
===================================================================
diff -u -r920342d3f8cb8c29966f2354ebc7d241df23ccf7 -red85c796c2e3bd73aeda374d9a109750bd7732e3
--- sources/storage/logger.h	(.../logger.h)	(revision 920342d3f8cb8c29966f2354ebc7d241df23ccf7)
+++ sources/storage/logger.h	(.../logger.h)	(revision ed85c796c2e3bd73aeda374d9a109750bd7732e3)
@@ -99,6 +99,8 @@
         { LogType::eLogDebug,  5 },
     };
 
+    const qint8 _availableSpacePercent = 25; // currently 16G SD-Card so 4G should always be available.
+
     const char *_dateFormat = "yyyy_MM_dd";
     const char *_timeFormat = "HH:mm:ss";