diff --git a/sync.inc.php b/sync.inc.php
index 361a38d..80a8b79 100644
--- a/sync.inc.php
+++ b/sync.inc.php
@@ -1,3 +1,5 @@
+// Original : Mase?
+// Modified by Sosuke Moriguchi (2016/12/21) -- ignore pukiwiki-comments in source page
 <?php
 function plugin_sync_action() {
   // config
@@ -50,6 +52,8 @@
 	  $columns = preg_split('/\|/', $line);
 	  array_splice($columns, $column_cut_index, $column_cut_length);
 	  array_push($target, join('|', $columns));
+	} else if (preg_match('/^\/\/', $line)) {
+	  // line is commented out (so do nothing)
 	} else {
 	  if ($target[count($target)-1] != '') array_push($target, '');
 	}