https://github.com/zealdocs/zeal/issues/376
https://github.com/zealdocs/zeal/issues/380

--- a/src/main.cpp	2015-04-19 23:08:52.000000000 +0000
+++ b/src/main.cpp	2015-08-18 22:36:56.408596690 +0000
@@ -3,6 +3,7 @@
 
 #include <QApplication>
 #include <QCommandLineParser>
+#include <QDataStream>
 #include <QDir>
 #include <QLocalSocket>
 #include <QStandardPaths>