diff --git a/app/Events/PresentationSpeakerEntityStateChanged.php b/app/Events/PresentationSpeakerEntityStateChanged.php
index 93df3630..1d0c5467 100644
--- a/app/Events/PresentationSpeakerEntityStateChanged.php
+++ b/app/Events/PresentationSpeakerEntityStateChanged.php
@@ -35,17 +35,17 @@ class PresentationSpeakerEntityStateChanged extends Event
 
     /**
      * SummitEventEntityStateChanged constructor.
-     * @param PresentationSpeaker $speaker
+     * @param PresentationSpeaker|null $speaker
      * @param LifecycleEventArgs $args
      */
-    public function __construct(PresentationSpeaker $speaker, LifecycleEventArgs $args)
+    public function __construct(?PresentationSpeaker $speaker, LifecycleEventArgs $args)
     {
         $this->speaker = $speaker;
         $this->args    = $args;
     }
 
     /**
-     * @return PresentationSpeaker
+     * @return PresentationSpeaker|null
      */
     public function getPresentationSpeaker()
     {
diff --git a/app/Models/Foundation/Summit/Speakers/PresentationSpeaker.php b/app/Models/Foundation/Summit/Speakers/PresentationSpeaker.php
index f4899604..12626d33 100644
--- a/app/Models/Foundation/Summit/Speakers/PresentationSpeaker.php
+++ b/app/Models/Foundation/Summit/Speakers/PresentationSpeaker.php
@@ -1316,7 +1316,7 @@ SQL;
      */
     public function deleted($args){
 
-        Event::fire(new PresentationSpeakerDeleted($this,  $this->pre_remove_events));
+        Event::fire(new PresentationSpeakerDeleted(null,  $this->pre_remove_events));
         $this->pre_remove_events = null;
     }