diff --git a/resources/scripts/.travis-install-linux.sh b/resources/scripts/.travis-install-linux.sh
index 732b000ef..2a36681a3 100755
--- a/resources/scripts/.travis-install-linux.sh
+++ b/resources/scripts/.travis-install-linux.sh
@@ -9,6 +9,7 @@ make install
 
 ls "./usr/bin"
 curl -o "linuxdeployqt" 'https://github.com/probonopd/linuxdeployqt/releases/download/continuous/linuxdeployqt-continuous-x86_64.AppImage'
-chmod +x "linuxdeployqt"
+chmod a+x "linuxdeployqt"
+unset QTDIR; unset QT_PLUGIN_PATH ; unset LD_LIBRARY_PATH
 linuxdeployqt "./usr/bin/rssguard" -appimage
 ls
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