diff --git a/engine/examples/running_ssh_service.md b/engine/examples/running_ssh_service.md
index 7c2c963fcf..6c85135649 100644
--- a/engine/examples/running_ssh_service.md
+++ b/engine/examples/running_ssh_service.md
@@ -25,10 +25,10 @@ FROM ubuntu:16.04
 RUN apt-get update && apt-get install -y openssh-server
 RUN mkdir /var/run/sshd
 RUN echo 'root:THEPASSWORDYOUCREATED' | chpasswd
-RUN sed -i 's/PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
+RUN sed -i 's/#*PermitRootLogin prohibit-password/PermitRootLogin yes/g' /etc/ssh/sshd_config
 
 # SSH login fix. Otherwise user is kicked off after login
-RUN sed 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' -i /etc/pam.d/sshd
+RUN sed -i 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' /etc/pam.d/sshd
 
 ENV NOTVISIBLE "in users profile"
 RUN echo "export VISIBLE=now" >> /etc/profile