diff --git a/mod/assign/lang/en/assign.php b/mod/assign/lang/en/assign.php
index d8653a550ec..0847b6b6df1 100644
--- a/mod/assign/lang/en/assign.php
+++ b/mod/assign/lang/en/assign.php
@@ -399,7 +399,7 @@ $string['numberofteams'] = 'Groups';
 $string['offline'] = 'No online submissions required';
 $string['open'] = 'Open';
 $string['outof'] = '{$a->current} out of {$a->total}';
-$string['overdue'] = '<font color="red">Assignment is overdue by: {$a}</font>';
+$string['overdue'] = 'Assignment is overdue by: {$a}';
 $string['override'] = 'Override';
 $string['overridedeletegroupsure'] = 'Are you sure you want to delete the override for group {$a}?';
 $string['overridedeleteusersure'] = 'Are you sure you want to delete the override for user {$a}?';
diff --git a/mod/assign/styles.css b/mod/assign/styles.css
index 3339f9d0890..dc725f424ba 100644
--- a/mod/assign/styles.css
+++ b/mod/assign/styles.css
@@ -642,6 +642,8 @@
     border-bottom: 1px solid #ddd;
 }
 
+.path-mod-assign .overdue,
+.path-mod-assign .overduesubmission,
 .path-mod-assign [data-region="grade-panel"] td.submissionnotgraded,
 .path-mod-assign [data-region="grade-panel"] div.submissionnotgraded {
     color: #ca3120;