diff --git a/polis_install.sh b/polis_install.sh
index a237ffc..c5d7690 100644
--- a/polis_install.sh
+++ b/polis_install.sh
@@ -224,7 +224,7 @@ fi
 
 function prepare_system() {
 echo -e "Preparing the system to install ${GREEN}$COIN_NAME${NC} master node."
-echo -e "This might take 15-20 minutes and the screen will not move, so please be patient"
+echo -e "This might take 15-20 minutes and the screen will not move, so please be patient."
 apt-get update >/dev/null 2>&1
 DEBIAN_FRONTEND=noninteractive apt-get update > /dev/null 2>&1
 DEBIAN_FRONTEND=noninteractive apt-get -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" -y -qq upgrade >/dev/null 2>&1