diff --git a/src/Bundle/ChillEventBundle/Entity/Event.php b/src/Bundle/ChillEventBundle/Entity/Event.php
index c065ed94f..28fcf6092 100644
--- a/src/Bundle/ChillEventBundle/Entity/Event.php
+++ b/src/Bundle/ChillEventBundle/Entity/Event.php
@@ -71,6 +71,10 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
     #[ORM\ManyToOne(targetEntity: EventType::class)]
     private ?EventType $type = null;
 
+    #[ORM\ManyToMany(targetEntity: EventTheme::class)]
+    #[ORM\JoinTable('chill_event_eventtheme')]
+    private Collection $themes;
+
     #[ORM\Embedded(class: CommentEmbeddable::class, columnPrefix: 'comment_')]
     private CommentEmbeddable $comment;
 
@@ -96,6 +100,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
         $this->participations = new ArrayCollection();
         $this->documents = new ArrayCollection();
         $this->comment = new CommentEmbeddable();
+        $this->themes = new ArrayCollection();
     }
 
     /**
@@ -126,10 +131,27 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
         return $this;
     }
 
+    public function getThemes(): Collection
+    {
+        return $this->themes;
+    }
+
+    public function addTheme(EventTheme $theme): self
+    {
+        $this->themes->add($theme);
+
+        return $this;
+    }
+
+    public function removeTheme(EventTheme $theme): void
+    {
+        $this->themes->removeElement($theme);
+    }
+
     /**
      * @return Center
      */
-    public function getCenter()
+    public function getCenter(): ?Center
     {
         return $this->center;
     }
@@ -137,7 +159,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
     /**
      * @return Scope
      */
-    public function getCircle()
+    public function getCircle(): ?Scope
     {
         return $this->circle;
     }
@@ -147,7 +169,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
      *
      * @return \DateTime
      */
-    public function getDate()
+    public function getDate(): ?\DateTime
     {
         return $this->date;
     }
@@ -157,7 +179,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
      *
      * @return int
      */
-    public function getId()
+    public function getId(): ?int
     {
         return $this->id;
     }
@@ -172,7 +194,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
      *
      * @return string
      */
-    public function getName()
+    public function getName(): ?string
     {
         return $this->name;
     }
@@ -202,7 +224,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
      *
      * @return Scope
      */
-    public function getScope()
+    public function getScope(): ?Scope
     {
         return $this->getCircle();
     }
@@ -210,7 +232,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
     /**
      * @return EventType
      */
-    public function getType()
+    public function getType(): ?EventType
     {
         return $this->type;
     }
@@ -218,7 +240,7 @@ class Event implements HasCenterInterface, HasScopeInterface, TrackCreationInter
     /**
      * Remove participation.
      */
-    public function removeParticipation(Participation $participation)
+    public function removeParticipation(Participation $participation): void
     {
         $this->participations->removeElement($participation);
     }
diff --git a/src/Bundle/ChillEventBundle/migrations/Version20250429062911.php b/src/Bundle/ChillEventBundle/migrations/Version20250429062911.php
new file mode 100644
index 000000000..9f931eaa1
--- /dev/null
+++ b/src/Bundle/ChillEventBundle/migrations/Version20250429062911.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\Event;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20250429062911 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add themes property to event';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('CREATE TABLE chill_event_eventtheme (event_id INT NOT NULL, eventtheme_id INT NOT NULL, PRIMARY KEY(event_id, eventtheme_id))');
+        $this->addSql('CREATE INDEX IDX_8D75029771F7E88B ON chill_event_eventtheme (event_id)');
+        $this->addSql('CREATE INDEX IDX_8D750297A81D3C55 ON chill_event_eventtheme (eventtheme_id)');
+        $this->addSql('ALTER TABLE chill_event_eventtheme ADD CONSTRAINT FK_8D75029771F7E88B FOREIGN KEY (event_id) REFERENCES chill_event_event (id) ON DELETE CASCADE NOT DEFERRABLE INITIALLY IMMEDIATE');
+        $this->addSql('ALTER TABLE chill_event_eventtheme ADD CONSTRAINT FK_8D750297A81D3C55 FOREIGN KEY (eventtheme_id) REFERENCES chill_event_event_theme (id) ON DELETE CASCADE NOT DEFERRABLE INITIALLY IMMEDIATE');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_event_eventtheme DROP CONSTRAINT FK_8D75029771F7E88B');
+        $this->addSql('ALTER TABLE chill_event_eventtheme DROP CONSTRAINT FK_8D750297A81D3C55');
+        $this->addSql('DROP TABLE chill_event_eventtheme');
+    }
+}