diff --git a/mod/resource/locallib.php b/mod/resource/locallib.php
index b6b4464009d..a94a0b6c86b 100644
--- a/mod/resource/locallib.php
+++ b/mod/resource/locallib.php
@@ -137,7 +137,7 @@ function resource_display_frame($resource, $cm, $course, $file) {
         $navurl = "$CFG->wwwroot/mod/resource/view.php?id=$cm->id&frameset=top";
         $title = strip_tags(format_string($course->shortname.': '.$resource->name));
         $framesize = $config->framesize;
-        $contentframetitle = format_string($resource->name);
+        $contentframetitle = s(format_string($resource->name));
         $modulename = s(get_string('modulename','resource'));
         $dir = get_string('thisdirection', 'langconfig');