diff --git a/client/src/components/content-forms/ContentBlockElementChooserWidget.vue b/client/src/components/content-forms/ContentBlockElementChooserWidget.vue
index 8164777a..e8bfdccd 100644
--- a/client/src/components/content-forms/ContentBlockElementChooserWidget.vue
+++ b/client/src/components/content-forms/ContentBlockElementChooserWidget.vue
@@ -82,7 +82,6 @@
             block: 'subtitle',
             title: 'Untertitel',
             icon: 'title-icon',
-            show: hasDefaultFeatures
           },
           {
             type: 'link',
diff --git a/server/rooms/models.py b/server/rooms/models.py
index 68f8c902..c6440e52 100644
--- a/server/rooms/models.py
+++ b/server/rooms/models.py
@@ -3,7 +3,7 @@ from django.db import models
 from django_extensions.db.models import TitleSlugDescriptionModel
 from wagtail.core.fields import StreamField
 
-from books.blocks import DocumentBlock, ImageUrlBlock, LinkBlock, VideoBlock
+from books.blocks import DocumentBlock, ImageUrlBlock, LinkBlock, SubtitleBlock, VideoBlock
 from books.models import TextBlock
 from core.mixins import GraphqlNodeMixin
 from users.models import SchoolClass
@@ -37,6 +37,7 @@ class RoomEntry(TitleSlugDescriptionModel):
         ('image_url_block', ImageUrlBlock()),
         ('link_block', LinkBlock()),
         ('document_block', DocumentBlock()),
+        ('subtitle', SubtitleBlock()),
         ('video_block', VideoBlock())
     ], null=True, blank=True)
 
diff --git a/server/rooms/tests/test_room_entry_mutations.py b/server/rooms/tests/test_room_entry_mutations.py
index 760ad12e..9682515b 100644
--- a/server/rooms/tests/test_room_entry_mutations.py
+++ b/server/rooms/tests/test_room_entry_mutations.py
@@ -9,6 +9,32 @@ from rooms.factories import RoomEntryFactory, RoomFactory
 from rooms.models import RoomEntry
 from users.factories import SchoolClassFactory
 
+ADD_ROOM_ENTRY_MUTATION = """
+fragment RoomEntryParts on RoomEntryNode {
+  id
+  slug
+  title
+  contents
+  author {
+    id
+    firstName
+    lastName
+    avatarUrl
+  }
+}
+
+
+mutation AddRoomEntry($input: AddRoomEntryInput!){
+  addRoomEntry(input: $input) {
+    roomEntry {
+      ...RoomEntryParts
+    }
+    errors
+
+  }
+}        
+        """
+
 
 class RoomEntryMutationsTestCase(SkillboxTestCase):
     def setUp(self):
@@ -141,31 +167,6 @@ class RoomEntryMutationsTestCase(SkillboxTestCase):
 
     def test_add_room_entry_not_owner_from_other_class(self):
         self.assertEqual(RoomEntry.objects.count(), 1)
-        mutation = """
-fragment RoomEntryParts on RoomEntryNode {
-  id
-  slug
-  title
-  contents
-  author {
-    id
-    firstName
-    lastName
-    avatarUrl
-  }
-}
-        
-        
-mutation AddRoomEntry($input: AddRoomEntryInput!){
-  addRoomEntry(input: $input) {
-    roomEntry {
-      ...RoomEntryParts
-    }
-    errors
-
-  }
-}        
-        """
         # input:
         # title = graphene.String(required=True)
         # contents = graphene.List(ContentElementInput)
@@ -175,7 +176,7 @@ mutation AddRoomEntry($input: AddRoomEntryInput!){
             'roomSlug': self.room.slug
         }
 
-        result = self.get_client(self.yet_another_user).execute(mutation, variables={
+        result = self.get_client(self.yet_another_user).execute(ADD_ROOM_ENTRY_MUTATION, variables={
             'input': {
                 'roomEntry': room_entry
             }
@@ -183,3 +184,26 @@ mutation AddRoomEntry($input: AddRoomEntryInput!){
         self.assertIsNotNone(result.errors)
         self.assertTrue('message' in result.errors[0])
         self.assertEqual(result.errors[0]['message'], 'You are in the wrong class')
+
+    def test_add_room_entry(self):
+        self.assertEqual(RoomEntry.objects.count(), 1)
+        text_block = {"type": "text_block", "value": {"text": "<p>some text</p>"}}
+        subtitle_block = {"type": "subtitle", "value": {"text": "A subtitle"}}
+        room_entry = {
+            'title': 'A room entry',
+            'roomSlug': self.room.slug,
+            'contents': [text_block, subtitle_block]
+        }
+        result = self.get_client(self.user).execute(ADD_ROOM_ENTRY_MUTATION, variables={
+            'input': {
+                'roomEntry': room_entry
+            }
+        })
+        self.assertIsNone(result.errors)
+        room_entry_data = result.data.get('addRoomEntry').get('roomEntry')
+        contents = room_entry_data.get('contents')
+        self.assertEqual(len(contents), 2)
+        text, subtitle = contents
+        self.assertEqual(text.get('type'), 'text_block')
+        self.assertEqual(subtitle.get('type'), 'subtitle')
+        self.assertEqual(RoomEntry.objects.count(), 2)