diff --git a/setup b/setup
index 5689796..fda6d75 100755
--- a/setup
+++ b/setup
@@ -1,39 +1,39 @@
 #!/bin/bash
 
-echo '####################################################################'
-echo '# docker_postgres_setup_script                                     #'
-echo '# Dennis Buchhorn - bucde@b-eit.de                                 #'
-echo '####################################################################'
-echo '# WARNING: password is plain text input!                           #'
-echo '#                                                                  #'
+echo "####################################################################"
+echo "# docker_postgres_setup_script                                     #"
+echo "# Dennis Buchhorn - bucde@b-eit.de                                 #"
+echo "####################################################################"
+echo "# WARNING: password is plain text input!                           #"
+echo "#                                                                  #"
 echo "# Config will be saved in '.env' file.                             #"
-echo '# (everything in plain text, even the password)                    #'
-#echo '#  #'
-echo '####################################################################'
-echo ''
+echo "# (everything in plain text, even the password)                    #"
+#echo "#  #"
+echo "####################################################################"
+echo ""
 
-CONFIG_EXISTS='false'
-KEEP_CONFIG=''
+CONFIG_EXISTS="false"
+KEEP_CONFIG=""
 
-POSTGRES_VERSION=''
-POSTGRES_HOST_IP_ADDRESS=''
-POSTGRES_HOST_PORT=''
-POSTGRES_ADMIN_USER=''
-POSTGRES_ADMIN_PASSWORD=''
+POSTGRES_VERSION=""
+POSTGRES_HOST_IP_ADDRESS=""
+POSTGRES_HOST_PORT=""
+POSTGRES_ADMIN_USER=""
+POSTGRES_ADMIN_PASSWORD=""
 
-POSTGRES_SHARED_HOSTING=''
+POSTGRES_SHARED_HOSTING=""
 
 if [ -f ".env" ]; then
-    CONFIG_EXISTS='true'
+    CONFIG_EXISTS="true"
     read -p "Config file '.env' already exists! Would you like to use this? (y/n)" KEEP_CONFIG
 fi
 
-if [ $CONFIG_EXISTS == 'false' ] || [ $KEEP_CONFIG == 'n' ]; then
-    read -p 'Enter postgres version which should be used: ' POSTGRES_VERSION
-    read -p 'Enter host (vm) ip address on which postgres should be accessible: ' POSTGRES_HOST_IP_ADDRESS
-    read -p 'Enter host (vm) port on which postgres should be accessible: ' POSTGRES_HOST_PORT
-    read -p 'Enter admin user name for postgres: ' POSTGRES_ADMIN_USER
-    read -p 'Enter admin password for postgres: ' POSTGRES_ADMIN_PASSWORD
+if [ $CONFIG_EXISTS == "false" ] || [ $KEEP_CONFIG == "n" ]; then
+    read -p "Enter postgres version which should be used: " POSTGRES_VERSION
+    read -p "Enter host (vm) ip address on which postgres should be accessible: " POSTGRES_HOST_IP_ADDRESS
+    read -p "Enter host (vm) port on which postgres should be accessible: " POSTGRES_HOST_PORT
+    read -p "Enter admin user name for postgres: " POSTGRES_ADMIN_USER
+    read -p "Enter admin password for postgres: " POSTGRES_ADMIN_PASSWORD
 
     rm -f .env
     touch .env
@@ -50,15 +50,15 @@ else
     done < ".env"
 fi
 
-read -p 'Would you like to modify postgres rights for shared hosting? (y/n)' POSTGRES_SHARED_HOSTING
+read -p "Would you like to modify postgres rights for shared hosting? (y/n)" POSTGRES_SHARED_HOSTING
 
 docker-compose up -d
 
-echo 'Wait a few seconds for the container to spin up ...'
+echo "Wait a few seconds for the container to spin up ..."
 
 sleep 5
 
-if [ $POSTGRES_SHARED_HOSTING == 'y' ]; then
+if [ $POSTGRES_SHARED_HOSTING == "y" ]; then
     touch tmp
     echo "REVOKE ALL ON DATABASE template1 FROM public;" >> tmp
     echo "REVOKE ALL ON SCHEMA public FROM public;" >> tmp
@@ -77,4 +77,4 @@ if [ $POSTGRES_SHARED_HOSTING == 'y' ]; then
     rm -f tmp
 fi
 
-echo 'Done!'
+echo "Done!"