diff --git a/hl_tests/postgres/prepare.sh b/hl_tests/postgres/prepare.sh
old mode 100644
new mode 100755
index 4f81e0d..e7ca3bc
--- a/hl_tests/postgres/prepare.sh
+++ b/hl_tests/postgres/prepare.sh
@@ -1,12 +1,9 @@
 #!/bin/bash
-
-# install postgres
-apt-get update
-apt-get install postgresql postgresql-contrib
-
-# check if postrges cluster created
+set -e
 
 if [ ! -d /etc/postgresql ]; then
+    apt-get update
+    apt-get install -y postgresql postgresql-contrib
     err=$(pg_createcluster 9.3 main --start 2>&1  /dev/null )
     if [ $? -ne 0 ]; then
         echo "There was an error while creating cluster"
@@ -15,6 +12,8 @@
 fi
 
 sed -i 's/^local\s\+all\s\+all\s\+peer/local all all trust/g' /etc/postgresql/9.3/main/pg_hba.conf
-echo "listen_address = '*'" >> /etc/postgresql/9.3/main/postgresql.conf
+sudo sed -i "s/#listen_addresses = 'localhost'/listen_addresses = '*'/g" /etc/postgresql/9.3/main/postgresql.conf
 
+service postgresql restart
 
+exit 0
\ No newline at end of file