diff --git a/manifests/interface.pp b/manifests/interface.pp
index d9cae66bd6450e5e1f1d6ea216bcda59442b514c..ec602302b49b87d5ff23d68d305f30d55072c344 100644
--- a/manifests/interface.pp
+++ b/manifests/interface.pp
@@ -729,7 +729,7 @@ define network::interface (
             file_line { 'config_file_per_interface':
               ensure => $ensure,
               path   => '/etc/network/interfaces',
-              line   => 'source /etc/network/interfaces.d/*.cfg',
+              line   => 'source /etc/network/interfaces.d/*',
               notify => $network_notify,
             }
           }