diff --git a/.gitignore b/.gitignore
index 62718f4..7c60054 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 .idea/
 /vendor/
 composer.lock
-gi
\ No newline at end of file
+.DS_Store
\ No newline at end of file
diff --git a/Event/CalendarEvent.php b/Event/CalendarEvent.php
index 30ddb7c..70d3bde 100644
--- a/Event/CalendarEvent.php
+++ b/Event/CalendarEvent.php
@@ -3,6 +3,7 @@
 namespace AncaRebeca\FullCalendarBundle\Event;
 
 use AncaRebeca\FullCalendarBundle\Model\EventInterface;
+use AncaRebeca\FullCalendarBundle\Model\FullCalendarEvent;
 use Symfony\Component\EventDispatcher\Event as EventDispatcher;
 
 class CalendarEvent extends EventDispatcher
@@ -66,11 +67,11 @@ public function getFilters()
     }
 
     /**
-     * @param EventInterface $event
+     * @param FullCalendarEvent $event
      *
      * @return $this
      */
-    public function addEvent(EventInterface $event)
+    public function addEvent(FullCalendarEvent $event)
     {
         if (!in_array($event, $this->events, true)) {
             $this->events[] = $event;
@@ -80,7 +81,7 @@ public function addEvent(EventInterface $event)
     }
 
     /**
-     * @return EventInterface[]
+     * @return FullCalendarEvent[]
      */
     public function getEvents()
     {
diff --git a/Model/EventInterface.php b/Model/EventInterface.php
index 6c13e32..2601c62 100644
--- a/Model/EventInterface.php
+++ b/Model/EventInterface.php
@@ -2,11 +2,17 @@
 
 namespace AncaRebeca\FullCalendarBundle\Model;
 
+/**
+ * Interface EventInterface
+ *  @deprecated since version V4.1.0, to be removed in v5.0.0. Use FullCalendarEvent instead
+ *
+ */
 interface EventInterface
 {
     /**
      * @param string $title
      * @param \DateTime $start
+     *
      */
     public function __construct($title, \DateTime $start);
 
diff --git a/Model/FullCalendarEvent.php b/Model/FullCalendarEvent.php
new file mode 100644
index 0000000..63f6790
--- /dev/null
+++ b/Model/FullCalendarEvent.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace AncaRebeca\FullCalendarBundle\Model;
+
+abstract class FullCalendarEvent
+{
+    /**
+     * @var string
+     */
+    protected $title;
+
+    /**
+     * @var \DateTime
+     */
+    protected $startDate;
+
+    /**
+     * @param string $title
+     * @param \DateTime $start
+     */
+    public function __construct($title, \DateTime $start)
+    {
+        $this->title = $title;
+        $this->startDate = $start;
+    }
+
+    /**
+     * @return array
+     */
+    abstract public function toArray();
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index adbdda1..12a5ed4 100644
--- a/README.md
+++ b/README.md
@@ -49,9 +49,9 @@ public function registerBundles()
 
 namespace AppBundle\Entity;
 
-use AncaRebeca\FullCalendarBundle\Model\Event as BaseEvent;
+use AncaRebeca\FullCalendarBundle\Model\FullCalendarEvent;
 
-class CalendarEvent extends BaseEvent
+class CalendarEvent extends FullCalendarEvent
 {
 	// Your fields 
 }
@@ -79,7 +79,7 @@ This listener is called when the event 'fullcalendar.set_data' is launched, for
 
 namespace AppBundle\Listener;
 
-use AncaRebeca\FullCalendarBundle\Event\CalendarEvent;
+use AncaRebeca\FullCalendarBundle\Model\FullCalendarEvent;
 use AppBundle\Entity\CalendarEvent as MyCustomEvent;
 
 class LoadDataListener
@@ -87,7 +87,7 @@ class LoadDataListener
     /**
      * @param CalendarEvent $calendarEvent
      *
-     * @return EventInterface[]
+     * @return FullCalendarEvent[]
      */
     public function loadData(CalendarEvent $calendarEvent)
     {
diff --git a/Service/Serializer.php b/Service/Serializer.php
index 3379e7e..fe9b1d5 100644
--- a/Service/Serializer.php
+++ b/Service/Serializer.php
@@ -2,12 +2,12 @@
 
 namespace AncaRebeca\FullCalendarBundle\Service;
 
-use AncaRebeca\FullCalendarBundle\Model\EventInterface;
+use AncaRebeca\FullCalendarBundle\Model\FullCalendarEvent;
 
 class Serializer implements SerializerInterface
 {
     /**
-     * @param EventInterface[] $events
+     * @param FullCalendarEvent[] $events
      *
      * @return string json
      */
@@ -15,7 +15,6 @@ public function serialize(array $events)
     {
         $result = [];
 
-        /** @var EventInterface $event */
         foreach ($events as $event) {
             $result[] = $event->toArray();
         }
diff --git a/Service/SerializerInterface.php b/Service/SerializerInterface.php
index 0e1d377..b726438 100644
--- a/Service/SerializerInterface.php
+++ b/Service/SerializerInterface.php
@@ -2,12 +2,12 @@
 
 namespace AncaRebeca\FullCalendarBundle\Service;
 
-use AncaRebeca\FullCalendarBundle\Model\EventInterface;
+use AncaRebeca\FullCalendarBundle\Model\FullCalendarEvent;
 
 interface SerializerInterface
 {
     /**
-     * @param EventInterface[] $events
+     * @param FullCalendarEvent[] $events
      *
      * @return string json
      */
diff --git a/spec/Model/EventSpec.php b/spec/Model/EventSpec.php
index 8284af2..2efe90e 100644
--- a/spec/Model/EventSpec.php
+++ b/spec/Model/EventSpec.php
@@ -24,10 +24,6 @@ function it_is_initializable()
         $this->shouldHaveType('AncaRebeca\FullCalendarBundle\Model\Event');
     }
 
-    function it_should_implement_an_event_interface()
-    {
-        $this->shouldImplement('AncaRebeca\FullCalendarBundle\Model\EventInterface');
-    }
 
     function it_has_require_values()
     {
diff --git a/spec/Service/CalendarSpec.php b/spec/Service/CalendarSpec.php
index 35d8886..ae7b2df 100644
--- a/spec/Service/CalendarSpec.php
+++ b/spec/Service/CalendarSpec.php
@@ -3,7 +3,7 @@
 namespace spec\AncaRebeca\FullCalendarBundle\Service;
 
 use AncaRebeca\FullCalendarBundle\Event\CalendarEvent;
-use AncaRebeca\FullCalendarBundle\Model\EventInterface;
+use AncaRebeca\FullCalendarBundle\Model\FullCalendarEvent;
 use AncaRebeca\FullCalendarBundle\Service\SerializerInterface;
 use PhpSpec\ObjectBehavior;
 use Prophecy\Argument;
@@ -25,7 +25,7 @@ function it_gets_a_json_string(
         SerializerInterface $serializer,
         EventDispatcherInterface $dispatcher,
         CalendarEvent $calendarEvent,
-        EventInterface $event
+        FullCalendarEvent $event
     ) {
         $startDate = new \DateTime();
         $endDate = new \DateTime();
diff --git a/spec/Service/SerializerSpec.php b/spec/Service/SerializerSpec.php
index 089e053..9397188 100644
--- a/spec/Service/SerializerSpec.php
+++ b/spec/Service/SerializerSpec.php
@@ -2,7 +2,7 @@
 
 namespace spec\AncaRebeca\FullCalendarBundle\Service;
 
-use AncaRebeca\FullCalendarBundle\Model\EventInterface;
+use AncaRebeca\FullCalendarBundle\Model\FullCalendarEvent;
 use PhpSpec\ObjectBehavior;
 use Prophecy\Argument;
 
@@ -13,7 +13,7 @@ function it_is_initializable()
         $this->shouldHaveType('AncaRebeca\FullCalendarBundle\Service\Serializer');
     }
 
-    function it_serialzes_data_successfully(EventInterface $event1, EventInterface $event2)
+    function it_serialzes_data_successfully(FullCalendarEvent $event1, FullCalendarEvent $event2)
     {
         $event1->toArray()->shouldBeCalled()->willReturn(['title' => 'Event 1', 'start' => '20/01/2015']);
         $event2->toArray()->shouldBeCalled()->willReturn(['title' => 'Event 2', 'start' => '21/01/2015']);