diff --git a/Dockerfile b/Dockerfile
index 04fb9f5..91d732f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,46 +1,46 @@
 # Please notice that this container uses X11. So, it has to run with:
 # docker run -it --env="DISPLAY" --env="QT_X11_NO_MITSHM=1" --volume="/tmp/.X11-unix:/tmp/.X11-unix:rw" kaffeine
 #
 
 FROM ubuntu:19.04
 
 MAINTAINER Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
 
 # STEP 1: Install build dependencies
 
 RUN echo "deb http://archive.ubuntu.com/ubuntu disco main restricted universe multiverse" >/etc/apt/sources.list
 RUN apt-get update
 RUN apt-get install -y  build-essential cmake \
     pkg-kde-tools pkg-config extra-cmake-modules qtbase5-dev libqt5x11extras5-dev \
     libkf5coreaddons-dev libkf5dbusaddons-dev libkf5i18n-dev libkf5kio-dev debhelper \
     libkf5solid-dev libkf5widgetsaddons-dev libkf5windowsystem-dev libkf5xmlgui-dev \
     libkf5doctools-dev git libx11-dev libxss-dev libudev-dev libvlc-dev libdvbv5-dev \
     libqt5dbus5 appstream dbus-x11
 
 # STEP 2: Build Kaffeine from its sources
 
 RUN cd ~ && git clone git://anongit.kde.org/kaffeine.git
 RUN cd ~/kaffeine && cmake . && make VERBOSE=1 && make install && cd ..
 
 # STEP 3: Add runtime dependencies
 
 RUN apt-get install -y --no-install-recommends vlc-data vlc-plugin-base vlc-plugin-qt \
     vlc-plugin-video-output
 
 # STEP 4: purge development dependencies
 
 RUN apt-get purge -y qtbase5-dev libqt5x11extras5-dev \
     libkf5coreaddons-dev libkf5dbusaddons-dev libkf5i18n-dev libkf5kio-dev debhelper \
     libkf5solid-dev libkf5widgetsaddons-dev libkf5windowsystem-dev libkf5xmlgui-dev \
     libkf5doctools-dev git libx11-dev libxss-dev libudev-dev libvlc-dev libdvbv5-dev
 RUN apt-get clean -y && rm -rf /var/lib/apt/lists/* ~/kaffeine
 
 # STEP 5: create an user to run it
 
-RUN useradd -m -k -r -u 1000 -g users -Gaudio,video,irc kaffeine
+RUN useradd -m -r -u 1000 -g users -Gaudio,video,irc kaffeine
 USER kaffeine
 
 # STEP 6: command to run the container
 
 #CMD ls -la /dev/dvb/adapter0
 CMD export $(dbus-launch); /usr/local/bin/kaffeine