diff --git a/.travis-before-install.sh b/.travis-before-install.sh
index 7ce8453df..0d25eebfb 100755
--- a/.travis-before-install.sh
+++ b/.travis-before-install.sh
@@ -4,10 +4,11 @@ if test "$TRAVIS_OS_NAME" = "osx"; then
   # Mac OS X.
   brew update
   brew install qt5
+  brew link --force qt5
 else
   # Linux.
   sudo add-apt-repository ppa:beineri/opt-qt57-trusty -y
   sudo apt-get update
   sudo apt-get -y install qt57tools qt57base qt57webengine
-  . /opt/qt57/bin/qt57-env.sh
+  bash /opt/qt57/bin/qt57-env.sh
 fi
\ No newline at end of file
diff --git a/src/core/feeddownloader.cpp b/src/core/feeddownloader.cpp
index b936a6ca7..6cb04e9f0 100755
--- a/src/core/feeddownloader.cpp
+++ b/src/core/feeddownloader.cpp
@@ -24,6 +24,7 @@
 #include <QDebug>
 #include <QThreadPool>
 #include <QMutexLocker>
+#include <QString>
 
 
 FeedDownloader::FeedDownloader(QObject *parent)