diff --git a/install/usr/share/swarmlab.io/sec/swarmlab-sec b/install/usr/share/swarmlab.io/sec/swarmlab-sec
index ddf7741..86e62c5 100755
--- a/install/usr/share/swarmlab.io/sec/swarmlab-sec
+++ b/install/usr/share/swarmlab.io/sec/swarmlab-sec
@@ -134,7 +134,7 @@ if [ -d "$Wdir/project" ]; then
 		 && rm -rf /usr/share/man \
 		 && rm -rf /usr/share/locale \ 
 		 && mkdir -p /var/run/sshd \
-		 && useradd -m -s /bin/bash -N -u $USER1_ID $USER1 \
+		 && useradd -m -s /bin/bash -N -u ${USER1_ID} ${USER1} \
 		 && echo 'root:$ROOT_PASSWORD' | chpasswd \
 		 && echo "export VISIBLE=now" >> /etc/profile \
 		 && mkdir -p /home/docker/project \
@@ -212,7 +212,7 @@ if [ "$Wdir" ==  "$HOME" ]; then
 		 && rm -rf /usr/share/man \
 		 && rm -rf /usr/share/locale \ 
 		 && mkdir -p /var/run/sshd \
-		 && useradd -m -s /bin/bash -N -u $USER1_ID $USER1 \
+		 && useradd -m -s /bin/bash -N -u ${USER1_ID} ${USER1} \
 		 && echo 'root:$ROOT_PASSWORD' | chpasswd \
 		 && echo "export VISIBLE=now" >> /etc/profile \
 		 && mkdir -p /home/docker/project \