diff --git a/README.md b/README.md
index c9255b3..0e5cb2e 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ Warning: This role disables root-login on the target server! Please make sure yo
 |`ssh_print_motd` | false | false to disable printing of the MOTD|
 |`ssh_print_last_log` | false | false to disable display of last login information|
 |`sftp_enabled` | false | true to enable sftp configuration|
-|`sftp_umask` | 0027 | Specifies the umask for sftp|
+|`sftp_umask` | '0027' | Specifies the umask for sftp|
 |`sftp_chroot` | true | false to disable chroot for sftp|
 |`sftp_chroot_dir` | /home/%u | change default sftp chroot location|
 |`ssh_client_roaming` | false | enable experimental client roaming|
diff --git a/defaults/main.yml b/defaults/main.yml
index ed7877e..f47c0a6 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -153,7 +153,7 @@ sftp_enabled: false
 sftp_chroot: true
 
 # sftp default umask
-sftp_umask: 0027
+sftp_umask: '0027'
 
 # change default sftp chroot location
 sftp_chroot_dir: /home/%u