diff --git a/src/lib/lib.pro b/src/lib/lib.pro
index 37421098b..af7bfcba4 100644
--- a/src/lib/lib.pro
+++ b/src/lib/lib.pro
@@ -9,6 +9,8 @@ TEMPLATE = lib
 
 DEFINES *= QUPZILLA_SHAREDLIBRARY
 
+CONFIG += c++11
+
 include(../defines.pri)
 include(../../translations/translations.pri)
 include(3rdparty/qtsingleapplication/qtsingleapplication.pri)