diff --git a/silentdragon-lite.pro b/silentdragon-lite.pro
index 68f2fea..cc9092d 100644
--- a/silentdragon-lite.pro
+++ b/silentdragon-lite.pro
@@ -132,7 +132,7 @@ TRANSLATIONS = res/silentdragonlite_es.ts \
                res/silentdragonlite_tr.ts 
              
 include(singleapplication/singleapplication.pri)
-DEFINES += QAPPLICATION_CLASS=QApplication
+DEFINES += QAPPLICATION_CLASS=QApplication _FORTIFY_SOURCE=2
 
 QMAKE_INFO_PLIST = res/Info.plist