diff --git a/manifests/iface.pp b/manifests/iface.pp
index 6dbff70..8790aa5 100644
--- a/manifests/iface.pp
+++ b/manifests/iface.pp
@@ -29,9 +29,8 @@
     interfaces::auto { $ifname_real: }
   }
 
-  $str = "iface ${ifname_real} ${family} ${method}\n\t<%= options.join('\n\t') %>\n\n"
   concat::fragment{"interfaces::iface_${name}":
     target  => '/etc/network/interfaces',
-    content => inline_template($str),
+    content => inline_template("iface <%= ifname_real -%> <%= family -%> <%= method -%>\n\t<%= options.join('\n\t') -%>\n\n"),
   }
 }
diff --git a/manifests/mapping.pp b/manifests/mapping.pp
index 8fe109e..12247d0 100644
--- a/manifests/mapping.pp
+++ b/manifests/mapping.pp
@@ -1,7 +1,6 @@
 define interfaces::mapping ( $script, $maps ) {
-  $str = "mapping ${name}\n\tscript ${script}\n\t<%= maps.join('\n\t') %>\n\n"
   concat::fragment{"interfaces::mapping_${name}":
     target  => '/etc/network/interfaces',
-    content => inline_template($str),
+    content => inline_template("mapping <%= name -%>\n\tscript <%= script -%>\n\t<%= maps.join('\n\t') -%>\n\n"),
   }
 }