diff --git a/enrol/instances.php b/enrol/instances.php
index 8514a0c64f9e7..ec95e7553837a 100644
--- a/enrol/instances.php
+++ b/enrol/instances.php
@@ -268,8 +268,8 @@
         }
     }
 
-    // add a row to the table
-    $table->data[] = array($displayname, $users, implode(' ', $updown), implode(' ', $edit));
+    // Add a row to the table.
+    $table->data[] = array($displayname, $users, implode('', $updown), implode('', $edit));
 
 }
 echo html_writer::table($table);