diff --git a/ui/hv2-ui/src/app/account/account.component.html b/ui/hv2-ui/src/app/account/account.component.html
index 23eeaea..2a10ed4 100644
--- a/ui/hv2-ui/src/app/account/account.component.html
+++ b/ui/hv2-ui/src/app/account/account.component.html
@@ -31,13 +31,13 @@
 Saldo: {{saldo?.saldo | number:'1.2-2'}} €
 </div>
 <div id="secondBlock">
-<table mat-table [dataSource]="accountEntriesDataSource" #zftable>
+<table mat-table [dataSource]="accountEntriesDataSource" matSort #zftable>
 <ng-container matColumnDef="createdAt">
-    <th mat-header-cell *matHeaderCellDef>Datum</th>
+    <th mat-header-cell *matHeaderCellDef mat-sort-header>Datum</th>
     <td mat-cell *matCellDef="let element">{{element.rawAccountEntry.created_at | date}}</td>
 </ng-container>
 <ng-container matColumnDef="fiscalYear">
-    <th mat-header-cell *matHeaderCellDef>Jahr</th>
+    <th mat-header-cell *matHeaderCellDef mat-sort-header>Jahr</th>
     <td mat-cell *matCellDef="let element">{{element.rawAccountEntry.fiscal_year}}</td>
 </ng-container>
 <ng-container matColumnDef="description">
@@ -45,7 +45,7 @@ Saldo: {{saldo?.saldo | number:'1.2-2'}} €
     <td mat-cell *matCellDef="let element">{{element.rawAccountEntry.description}}</td>
 </ng-container>
 <ng-container matColumnDef="document_no">
-    <th mat-header-cell *matHeaderCellDef>Belegnummer</th>
+    <th mat-header-cell *matHeaderCellDef mat-sort-header>Belegnummer</th>
     <td mat-cell *matCellDef="let element">{{element.rawAccountEntry.document_no}}</td>
 </ng-container>
 <ng-container matColumnDef="amount">
@@ -53,11 +53,11 @@ Saldo: {{saldo?.saldo | number:'1.2-2'}} €
     <td mat-cell *matCellDef="let element" class="rightaligned">{{element.rawAccountEntry.amount | number:'1.2-2'}} €</td>
 </ng-container>
 <ng-container matColumnDef="category">
-    <th mat-header-cell *matHeaderCellDef>Kategorie</th>
+    <th mat-header-cell *matHeaderCellDef mat-sort-header>Kategorie</th>
     <td mat-cell *matCellDef="let element">{{element.accountEntryCategory}}</td>
 </ng-container>
 <ng-container matColumnDef="overhead_relevant">
-    <th mat-header-cell *matHeaderCellDef>BK relevant</th>
+    <th mat-header-cell *matHeaderCellDef mat-sort-header>BK relevant</th>
     <td mat-cell *matCellDef="let element">{{element.overheadRelevant}}</td>
 </ng-container>
 <tr mat-header-row *matHeaderRowDef="accountEntriesDisplayedColumns"></tr>