diff --git a/docs/installation/postgresql.md b/docs/installation/postgresql.md
index 543a0a2cf..86f988ebc 100644
--- a/docs/installation/postgresql.md
+++ b/docs/installation/postgresql.md
@@ -13,6 +13,11 @@ NetBox requires a PostgreSQL database to store data. (Please note that MySQL is
 
 ```no-highlight
 # yum install -y postgresql postgresql-server postgresql-devel
+
+CentOS/RHEL6
+# service postgresql initdb
+
+CentOS/RHEL7
 # postgresql-setup initdb
 ```