diff --git a/conf/mongod.conf b/conf/mongod.conf
new file mode 100644
index 0000000..5282891
--- /dev/null
+++ b/conf/mongod.conf
@@ -0,0 +1,43 @@
+# mongod.conf
+
+# for documentation of all options, see:
+#   http://docs.mongodb.org/manual/reference/configuration-options/
+
+# Where and how to store data.
+storage:
+  dbPath: /var/lib/mongodb
+  journal:
+    enabled: true
+engine: wiredTiger/
+#  mmapv1:
+#  wiredTiger:
+
+# where to write logging data.
+systemLog:
+  destination: file
+  logAppend: true
+  path: /var/log/mongodb/mongod.log
+
+# network interfaces
+net:
+  port: 27017
+  bindIp: 127.0.0.1
+
+
+# how the process runs
+processManagement:
+  timeZoneInfo: /usr/share/zoneinfo
+
+#security:
+
+#operationProfiling:
+
+replSetName: rs01/
+
+#sharding:
+
+## Enterprise-Only Options:
+
+#auditLog:
+
+#snmp:
diff --git a/conf/systemd.service b/conf/systemd.service
index 35624e4..adcac84 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -13,10 +13,7 @@ StandardOutput=syslog
 StandardError=syslog
 SyslogIdentifier=rocketchat
 
-Environment=MONGO_URL=mongodb://localhost:27017/rocketchat?replicaSet=rs01
-MONGO_OPLOG_URL=mongodb://localhost:27017/local?replicaSet=rs01
-ROOT_URL=http://__DOMAIN__:__PORT__
-PORT=__PORT__
+Environment=MONGO_URL=mongodb://localhost:27017/rocketchat?replicaSet=rs01 MONGO_OPLOG_URL=mongodb://localhost:27017/local?replicaSet=rs01 ROOT_URL=http://__DOMAIN__:__PORT__ PORT=__PORT__
 
 [Install]
 WantedBy=multi-user.target
diff --git a/scripts/install b/scripts/install
index 9dc1d3a..3bc49b0 100644
--- a/scripts/install
+++ b/scripts/install
@@ -137,12 +137,11 @@ ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH" --targ
 
 ynh_add_systemd_config
 
-# #=================================================
-# # MODIFY A CONFIG FILE
-# #=================================================
+#=================================================
+# MODIFY A CONFIG FILE
+#=================================================
 
-ynh_replace_string --match_string="  engine:/"  --replace_string="engine: wiredTiger/"  --target_file="/etc/mongod.conf"
-ynh_replace_string --match_string="replication:/replication:\n"  --replace_string="replSetName: rs01/" --target_file="/etc/mongod.conf"
+ynh_add_config --template="../conf/mongod.conf" --destination="/etc/mongod.conf"
 
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST