diff --git a/ipynbsrv/api/serializer.py b/ipynbsrv/api/serializer.py
index 64df83d..28a6cb8 100644
--- a/ipynbsrv/api/serializer.py
+++ b/ipynbsrv/api/serializer.py
@@ -231,7 +231,7 @@ class NestedShareSerializer(serializers.ModelSerializer):
     """
     tags = TagSerializer(many=True, read_only=True)
     members = NestedBackendUserSerializer(source='get_members', many=True, read_only=True)
-    access_groups = NestedCollaborationGroupSerializer(many=True, read_only=True)
+    access_groups = FlatCollaborationGroupSerializer(many=True, read_only=True)
     owner = NestedBackendUserSerializer(many=False, read_only=True)
 
     class Meta:
diff --git a/ipynbsrv/web/templates/web/shares/manage.html b/ipynbsrv/web/templates/web/shares/manage.html
index ad4a1d2..d80a65e 100644
--- a/ipynbsrv/web/templates/web/shares/manage.html
+++ b/ipynbsrv/web/templates/web/shares/manage.html
@@ -102,28 +102,6 @@ <h2>Shared with...</h2>
                         </td>
                     </tr>
                     {% endfor %}
-
-                    {% for user in users %}
-                    {% if user.backend_user.collab_group in share.access_groups %}
-                        <tr>
-                            <td><a href="{% url 'group_manage' user.backend_user.collab_group.id %}">{{ user.backend_user.collab_group.name }}</a></td>
-                            <td style="text-align: right">
-                            {% if request.user.backend_user.id == share.owner.id %}
-                                {% if member.backend_user.id != share.owner %}
-                                    <form action="{% url 'share_remove_access_group' %}" method="POST" role="form" class="form-action">
-                                        {% csrf_token %}
-                                        <input type="hidden" name="share_id" value="{{ share.id }}">
-                                        <input type="hidden" name="access_group" value="{{ user.backend_user.collab_group.id }}">
-                                        <button class="btn btn-sm btn-danger" title="Remove from share?" data-toggle="confirmation" data-placement="left">
-                                            <i class="glyphicon glyphicon-remove" aria-hidden="true"></i>
-                                        </button>
-                                    </form>
-                                {% endif %}
-                            {% endif %}
-                            </td>
-                        </tr>
-                    {% endif %}
-                    {% endfor %}
                 </tbody>
             </table>
 
diff --git a/ipynbsrv/web/templates/web/shares/modal_addgroups.html b/ipynbsrv/web/templates/web/shares/modal_addgroups.html
index 3732cf5..43e4cd3 100644
--- a/ipynbsrv/web/templates/web/shares/modal_addgroups.html
+++ b/ipynbsrv/web/templates/web/shares/modal_addgroups.html
@@ -17,7 +17,7 @@ <h4 class="modal-title">Add share user</h4>
                         <div class="select">
                             <select class="enableMultiselectCaseInsensitiveFiltering" multiple="multiple" name="access_groups">
                                 {% for group in groups %}
-                                {% if group not in share.access_groups and not group.is_single_user_group %}
+                                {% if group.id not in share.access_group_ids and not group.is_single_user_group %}
                                         <option value="{{ group.id }}">{{ group.name }}</option>
                                     {% endif %}
                                 {% endfor %}
diff --git a/ipynbsrv/web/templates/web/shares/modal_addusers.html b/ipynbsrv/web/templates/web/shares/modal_addusers.html
index b0998d4..2322004 100644
--- a/ipynbsrv/web/templates/web/shares/modal_addusers.html
+++ b/ipynbsrv/web/templates/web/shares/modal_addusers.html
@@ -13,12 +13,12 @@ <h4 class="modal-title">Add share user</h4>
                 <div class="modal-body">
 
                 <div class="form-group">
-                        <label for="access_groups">Groups</label>
+                        <label for="access_groups">Users</label>
                         <div class="select">
                             <select class="enableMultiselectCaseInsensitiveFiltering" multiple="multiple" name="access_groups">
                                 {% for user in users %}
                                 {% if user.backend_user.collab_group %}
-                                    {% if user.backend_user.collab_group not in share.access_groups and user != request.user %}
+                                    {% if user.backend_user.collab_group.id not in share.access_group_ids and user != request.user %}
                                         <option value="{{ user.backend_user.collab_group.id }}">{{ user.backend_user.collab_group.name }}</option>
                                     {% endif %}
                                 {% endif %}
diff --git a/ipynbsrv/web/views/shares.py b/ipynbsrv/web/views/shares.py
index 5a32505..f791694 100644
--- a/ipynbsrv/web/views/shares.py
+++ b/ipynbsrv/web/views/shares.py
@@ -212,6 +212,7 @@ def manage(request, share_id):
 
     client = get_httpclient_instance(request)
     share = client.shares(share_id).get()
+    share['access_group_ids'] = [g.id for g in share.access_groups]
     users = client.users.get()
     groups = client.collaborationgroups.get()
     new_notifications_count = len(client.notificationlogs.unread.get())