diff --git a/client/src/app/domain/models/users/user.ts b/client/src/app/domain/models/users/user.ts
index 4edac37618..95158d3e87 100644
--- a/client/src/app/domain/models/users/user.ts
+++ b/client/src/app/domain/models/users/user.ts
@@ -12,6 +12,7 @@ export type UserSortProperty = 'first_name' | 'last_name' | 'number';
  * Iterable pre selection of genders
  */
 export const GENDERS = [_(`female`), _(`male`), _(`diverse`), _(`non-binary`)];
+export const GENDER_FITLERABLE = [`female`, `male`, `diverse`, `non-binary`];
 
 /**
  * Representation of a user in contrast to the operator.
diff --git a/client/src/app/site/pages/meetings/pages/participants/pages/participant-list/components/participant-list/participant-list.component.ts b/client/src/app/site/pages/meetings/pages/participants/pages/participant-list/components/participant-list/participant-list.component.ts
index 1cf96245a6..e5b2cf2f70 100644
--- a/client/src/app/site/pages/meetings/pages/participants/pages/participant-list/components/participant-list/participant-list.component.ts
+++ b/client/src/app/site/pages/meetings/pages/participants/pages/participant-list/components/participant-list/participant-list.component.ts
@@ -269,7 +269,7 @@ export class ParticipantListComponent extends BaseMeetingListViewComponent<ViewU
                         const nextGroupIds = user.group_ids().filter(id => this.activeMeeting.default_group_id !== id);
                         return {
                             id: user.id,
-                            group_ids: nextGroupIds.concat(chosenGroupIds)
+                            group_ids: [...new Set(nextGroupIds.concat(chosenGroupIds))]
                         };
                     }, ...this.selectedRows)
                     .resolve();
diff --git a/client/src/app/site/pages/meetings/pages/participants/pages/participant-list/services/participant-list-filter.service/participant-list-filter.service.ts b/client/src/app/site/pages/meetings/pages/participants/pages/participant-list/services/participant-list-filter.service/participant-list-filter.service.ts
index 9b7faa2cd1..7a2fd360e2 100644
--- a/client/src/app/site/pages/meetings/pages/participants/pages/participant-list/services/participant-list-filter.service/participant-list-filter.service.ts
+++ b/client/src/app/site/pages/meetings/pages/participants/pages/participant-list/services/participant-list-filter.service/participant-list-filter.service.ts
@@ -1,5 +1,6 @@
 import { Injectable } from '@angular/core';
 import { TranslateService } from '@ngx-translate/core';
+import { GENDER_FITLERABLE, GENDERS } from 'src/app/domain/models/users/user';
 import { OsFilter, OsHideFilterSetting } from 'src/app/site/base/base-filter.service';
 import { BaseMeetingFilterListService } from 'src/app/site/pages/meetings/base/base-meeting-filter-list.service';
 import { MeetingActiveFiltersService } from 'src/app/site/pages/meetings/services/meeting-active-filters.service';
@@ -98,6 +99,17 @@ export class ParticipantListFilterService extends BaseMeetingFilterListService<V
                     { condition: true, label: this.translate.instant(`Has unchanged vote weight`) }
                 ]
             },
+            {
+                property: `gender`,
+                label: this.translate.instant(`Gender`),
+                options: [
+                    { condition: GENDER_FITLERABLE[0], label: this.translate.instant(GENDERS[0]) },
+                    { condition: GENDER_FITLERABLE[1], label: this.translate.instant(GENDERS[1]) },
+                    { condition: GENDER_FITLERABLE[2], label: this.translate.instant(GENDERS[2]) },
+                    { condition: GENDER_FITLERABLE[3], label: this.translate.instant(GENDERS[3]) },
+                    { condition: null, label: this.translate.instant(`unknown`) }
+                ]
+            },
             {
                 property: `hasSamlId`,
                 label: this.translate.instant(`SSO`),