diff --git a/ssh/manifests/init.pp b/ssh/manifests/init.pp
index 515e9f5..84daeb8 100644
--- a/ssh/manifests/init.pp
+++ b/ssh/manifests/init.pp
@@ -178,7 +178,7 @@ class ssh::allowgroups {
     exec { "ssh-allowgroups-sub":
         path    => "/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin",
         cwd     => "/etc/ssh",
-        command => "ruby -pi -e 'sub(/(AllowGroups).*/, \"\\\1 ${ssh_allowgroups_real}\")' sshd_config",
+        command => "ruby -pi -e 'sub(/(AllowGroups).*/, \"\\\\1 ${ssh_allowgroups_real}\")' sshd_config",
         unless  => "grep -q '^[^#]*AllowGroups ${ssh_allowgroups_real}' sshd_config",
         notify  => Service["sshd"],
     }