diff --git a/roles/postgresql_server/templates/postgresql/postgresql.conf.j2 b/roles/postgresql_server/templates/postgresql/postgresql.conf.j2
index d2e1d29..0df0512 100644
--- a/roles/postgresql_server/templates/postgresql/postgresql.conf.j2
+++ b/roles/postgresql_server/templates/postgresql/postgresql.conf.j2
@@ -57,7 +57,7 @@ external_pid_file = '/var/run/postgresql/{{ postgresql.version }}-main.pid'
 
 # - Connection Settings -
 
-listen_addresses = 0.0.0.0, [::]
+listen_addresses = '0.0.0.0, [::]'
 # listen_addresses = * # listen to all
 #listen_addresses = 'localhost'		# what IP address(es) to listen on;
 					# comma-separated list of addresses;