diff --git a/source/tutorial/install-mongodb-on-os-x.txt b/source/tutorial/install-mongodb-on-os-x.txt
index 292354a0e35..ab222cf8f67 100644
--- a/source/tutorial/install-mongodb-on-os-x.txt
+++ b/source/tutorial/install-mongodb-on-os-x.txt
@@ -46,5 +46,7 @@ Only install MongoDB using this procedure if you cannot use
 
 Run MongoDB
 -----------
-
+Set permissions for the data directory.¶
+ - Here I belive you have to add the command for the read and write permissions: chmod username 0755 /data/db 
 .. include:: /includes/steps/run-mongodb-on-linux.rst
+