diff --git a/course/renderer.php b/course/renderer.php
index 672ccff5793..accae17a724 100644
--- a/course/renderer.php
+++ b/course/renderer.php
@@ -956,7 +956,7 @@ class core_course_renderer extends plugin_renderer_base {
      * @param cm_info $cm
      * @return string
      */
-    public function course_section_cm_unavilable_error_message(cm_info $cm) {
+    public function course_section_cm_unavailable_error_message(cm_info $cm) {
         if ($cm->uservisible) {
             return null;
         }
diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index 15d42cd3276..96d13f4048c 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -2901,7 +2901,7 @@ function require_login($courseorid = null, $autologinguest = true, $cm = null, $
         // Get the error message that activity is not available and why (if explanation can be shown to the user).
         $PAGE->set_course($course);
         $renderer = $PAGE->get_renderer('course');
-        $message = $renderer->course_section_cm_unavilable_error_message($cm);
+        $message = $renderer->course_section_cm_unavailable_error_message($cm);
         redirect(course_get_url($course), $message, null, \core\output\notification::NOTIFY_ERROR);
     }