diff --git a/include/ajax.tickets.php b/include/ajax.tickets.php
index d45c32e845d3cd7c9efc40fe4a57d2e8e8d4c553..9c9a8b7d4ddde99fe406f3dcdb6d874d4f17f89c 100644
--- a/include/ajax.tickets.php
+++ b/include/ajax.tickets.php
@@ -579,7 +579,7 @@ class TicketsAjaxAPI extends AjaxController {
 
         $errors = $info = array();
         if ($ticket->updateCollaborators($_POST, $errors))
-            Http::response(201, sprintf('Recipients (%d)', $ticket->getNumCollaborators()));
+            Http::response(201, sprintf('Recipients (%d)', $ticket->getNumActiveCollaborators()));
 
         if($errors && $errors['err'])
             $info +=array('error' => $errors['err']);
diff --git a/include/class.ticket.php b/include/class.ticket.php
index cbc319c6799a35e85f71d70b6f0d5b30fdf74a73..bb07895ae17cb779e64ccad3a0c71aa8452350ca 100644
--- a/include/class.ticket.php
+++ b/include/class.ticket.php
@@ -565,6 +565,14 @@ class Ticket {
         return $this->ht['collaborators'];
     }
 
+    function getNumActiveCollaborators() {
+
+        if (!isset($this->ht['active_collaborators']))
+            $this->ht['active_collaborators'] = count($this->getActiveCollaborators());
+
+        return $this->ht['active_collaborators'];
+    }
+
     function getActiveCollaborators() {
         return $this->getCollaborators(array('isactive'=>1));
     }
@@ -630,6 +638,7 @@ class Ticket {
 
         db_query($sql);
 
+        unset($this->ht['active_collaborators']);
         $this->collaborators = null;
 
         return true;
diff --git a/include/staff/ticket-view.inc.php b/include/staff/ticket-view.inc.php
index dc0f71ce1128eb441c8c076ca25e59fb734a67f0..b255b225dc2aa43fc2c0aa4973513680218ab5c5 100644
--- a/include/staff/ticket-view.inc.php
+++ b/include/staff/ticket-view.inc.php
@@ -454,7 +454,7 @@ $tcount+= $ticket->getNumNotes();
                     }
                     $recipients = 'Add Recipients';
                     if ($ticket->getNumCollaborators())
-                        $recipients = sprintf('Recipients (%d)', $ticket->getNumCollaborators());
+                        $recipients = sprintf('Recipients (%d)', $ticket->getNumActiveCollaborators());
 
                     echo sprintf('<span><a class="collaborators"
                             href="#tickets/%d/collaborators/manage"><span id="recipients">%s</span></a></span>',