diff --git a/lib/editor/popups/link.php b/lib/editor/popups/link.php
index 0806861565e..8109757c634 100644
--- a/lib/editor/popups/link.php
+++ b/lib/editor/popups/link.php
@@ -14,7 +14,7 @@
 <html>
 <head>
 <title><?php print_string("insertlink","editor");?></title>
-<meta http-equiv="Content-Type" content="text/html; <?php print_string("thischarset");?>" />
+<meta http-equiv="Content-Type" content="text/html; charset=<?php print_string("thischarset");?>" />
 <script language="javascript" type="text/javascript">
 
 function onCancel() {
diff --git a/lib/editor/popups/link_std.php b/lib/editor/popups/link_std.php
index 7818691a84e..503ed5ed2f6 100644
--- a/lib/editor/popups/link_std.php
+++ b/lib/editor/popups/link_std.php
@@ -14,7 +14,7 @@
     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; <?php print_string("thischarset");?>" />
+<meta http-equiv="Content-Type" content="text/html; charset=<?php print_string("thischarset");?>" />
   <title><?php print_string("insertlink","editor");?></title>
   <script language="javascript" type="text/javascript" src="popup.js"></script>
   <script language="javascript" type="text/javascript">
