diff --git a/custom/manifests/init.pp b/custom/manifests/init.pp
index a6fc0d5..b380073 100644
--- a/custom/manifests/init.pp
+++ b/custom/manifests/init.pp
@@ -27,15 +27,15 @@ class custom {
 #   $ensure:
 #       See $ensure from File type.
 #   $group:
-#       See $ensure from File type.
+#       See $group from File type.
 #   $mode:
-#       See $ensure from File type.
+#       See $mode from File type.
 #   $owner:
-#       See $ensure from File type.
+#       See $owner from File type.
 #   $seltype:
-#       See $ensure from File type.
+#       See $seltype from File type.
 #   $source:
-#       See $ensure from File type. This define will also accept http,
+#       See $source from File type. This define will also accept http,
 #       https and ftp urls.
 #
 # === Sample usage:
@@ -58,7 +58,7 @@ define custom::file($ensure, $group="NONE", $mode="NONE", $owner="NONE", $seltyp
     case $method {
         "ftp","http","https": {
             $fetch_cmd = "wget -q -O '${name}' '${source}'"
-            $diff_cmd = "wget -q -O - '${source}' | diff -q - '${name}'"
+            $diff_cmd = "wget -N --spider '${source}' 2>&1 | fgrep 'Server file no newer than local file'"
         }
     }