diff --git a/htdocs/group/index.php b/htdocs/group/index.php
index ed596d7e32a58eee926a6610e6abdaba4fab368a..d961be551d4043f38767ee8136642ea3397f8319 100644
--- a/htdocs/group/index.php
+++ b/htdocs/group/index.php
@@ -93,7 +93,7 @@ if (get_config('allowgroupcategories')
     && $groupcategories = get_records_menu('group_category','','','displayorder', 'id,title')
 ) {
     $options[0] = get_string('allcategories', 'group');
-    $options[-1] = get_string('categoryunassigned', 'group');
+    $options[-1] = get_string('notcategorised', 'group');
     $options += $groupcategories;
 
     $groupcategoryfield = array(
diff --git a/htdocs/lang/en.utf8/group.php b/htdocs/lang/en.utf8/group.php
index 3a5cd306bbec6de99ccea8394b33a714613430ad..c83fb82bae6cd737c0546444bae03fe23046a051 100644
--- a/htdocs/lang/en.utf8/group.php
+++ b/htdocs/lang/en.utf8/group.php
@@ -91,7 +91,7 @@ $string['groupcategory'] = 'Group category';
 $string['allcategories'] = 'All categories';
 $string['groupoptionsset'] = 'Group options have been updated.';
 $string['nocategoryselected'] = 'No category selected';
-$string['categoryunassigned'] = 'Category unassigned';
+$string['notcategorised'] = 'Not categorised';
 $string['hasrequestedmembership'] = 'has requested membership of this group';
 $string['hasbeeninvitedtojoin'] = 'has been invited to join this group';
 $string['groupinvitesfrom'] = 'Invited to join:';