diff --git a/js/src/graphql/event.ts b/js/src/graphql/event.ts
index 3ec975a7f..7fce45d7f 100644
--- a/js/src/graphql/event.ts
+++ b/js/src/graphql/event.ts
@@ -141,7 +141,7 @@ export const CREATE_EVENT = gql`
   $title: String!,
   $description: String!,
   $organizerActorId: ID!,
-  $category: String!,
+  $category: String,
   $beginsOn: DateTime!,
   $picture: PictureInput,
   $tags: [String],
@@ -174,7 +174,7 @@ export const EDIT_EVENT = gql`
   $title: String!,
   $description: String!,
   $organizerActorId: Int!,
-  $category: String!
+  $category: String
   ) {
     EditEvent(title: $title, description: $description, organizerActorId: $organizerActorId, category: $category) {
       uuid
diff --git a/js/src/types/event.model.ts b/js/src/types/event.model.ts
index 50f1eda79..841e092bb 100644
--- a/js/src/types/event.model.ts
+++ b/js/src/types/event.model.ts
@@ -53,7 +53,7 @@ export interface IEvent {
   title: string;
   slug: string;
   description: string;
-  category: Category;
+  category: Category|null;
 
   beginsOn: Date;
   endsOn: Date;
diff --git a/js/src/views/Event/Create.vue b/js/src/views/Event/Create.vue
index 3e2c94830..e83a6b79e 100644
--- a/js/src/views/Event/Create.vue
+++ b/js/src/views/Event/Create.vue
@@ -29,7 +29,7 @@
           <editor v-model="event.description" />
         </div>
 
-        <b-field :label="$gettext('Category')">
+        <!--<b-field :label="$gettext('Category')">
           <b-select placeholder="Select a category" v-model="event.category">
             <option
               v-for="category in categories"
@@ -37,7 +37,7 @@
               :key="category"
             >{{ $gettext(category) }}</option>
           </b-select>
-        </b-field>
+        </b-field>-->
 
         <h2 class="subtitle">
           <translate>
@@ -103,7 +103,7 @@ export default class CreateEvent extends Vue {
   @Prop({ required: false, type: String }) uuid!: string;
 
   loggedPerson: IPerson = new Person();
-  categories: string[] = Object.keys(Category);
+  /*categories: string[] = Object.keys(Category);*/
   event: IEvent = new EventModel();
   pictureFile: File | null = null;
   EventVisibility = EventVisibility;
diff --git a/lib/mobilizon/events/event.ex b/lib/mobilizon/events/event.ex
index fe100b3ea..d3be7e20b 100644
--- a/lib/mobilizon/events/event.ex
+++ b/lib/mobilizon/events/event.ex
@@ -91,7 +91,6 @@ defmodule Mobilizon.Events.Event do
       :title,
       :begins_on,
       :organizer_actor_id,
-      :category,
       :url,
       :uuid
     ])
diff --git a/lib/mobilizon_web/schema/event.ex b/lib/mobilizon_web/schema/event.ex
index aff8bc835..96f8bea30 100644
--- a/lib/mobilizon_web/schema/event.ex
+++ b/lib/mobilizon_web/schema/event.ex
@@ -131,7 +131,7 @@ defmodule MobilizonWeb.Schema.EventType do
       arg(:online_address, :string)
       arg(:phone_address, :string)
       arg(:organizer_actor_id, non_null(:id))
-      arg(:category, non_null(:string))
+      arg(:category, :string)
       arg(:physical_address, :address_input)
 
       resolve(&Event.create_event/3)