diff --git a/src/app/shared/form/vocabulary-treeview/vocabulary-treeview.component.html b/src/app/shared/form/vocabulary-treeview/vocabulary-treeview.component.html
index a0d320a854..a37b26e348 100644
--- a/src/app/shared/form/vocabulary-treeview/vocabulary-treeview.component.html
+++ b/src/app/shared/form/vocabulary-treeview/vocabulary-treeview.component.html
@@ -6,13 +6,16 @@
              [attr.aria-label]="'vocabulary-treeview.search.form.search-placeholder' | translate"
              [placeholder]="'vocabulary-treeview.search.form.search-placeholder' | translate">
       <div class="input-group-append" id="button-addon4">
-        <button class="btn btn-outline-primary" type="button" (click)="search()" [disabled]="!isSearchEnabled()">
+        <button class="btn btn-outline-primary" type="button" (click)="search()" [disabled]="!isSearchEnabled()"
+                [attr.aria-label]="'vocabulary-treeview.search.form.search' | translate">
           {{'vocabulary-treeview.search.form.search' | translate}}
         </button>
-        <button class="btn btn-outline-secondary" type="button" (click)="reset()">
+        <button class="btn btn-outline-secondary" type="button" (click)="reset()"
+                [attr.aria-label]="'vocabulary-treeview.search.form.reset' | translate">
           {{'vocabulary-treeview.search.form.reset' | translate}}
         </button>
-        <button class="btn btn-outline-primary" type="button" (click)="add()" [disabled]="this.vocabularyOptions.closed">
+        <button class="btn btn-outline-primary" type="button" (click)="add()" [disabled]="this.vocabularyOptions.closed"
+                [attr.aria-label]="'vocabulary-treeview.search.form.add' | translate">
           {{'vocabulary-treeview.search.form.add' | translate}}
         </button>
       </div>
@@ -88,13 +91,15 @@
     </cdk-tree-node>
 
     <cdk-tree-node *cdkTreeNodeDef="let node; when: isLoadMore" cdkTreeNodePadding>
-      <button class="btn btn-outline-secondary btn-sm" (click)="loadMore(node.loadMoreParentItem)">
+      <button class="btn btn-outline-secondary btn-sm" (click)="loadMore(node.loadMoreParentItem)"
+              [attr.aria-label]="'vocabulary-treeview.load-more' | translate">
         {{'vocabulary-treeview.load-more' | translate}}...
       </button>
     </cdk-tree-node>
 
     <cdk-tree-node *cdkTreeNodeDef="let node; when: isLoadMoreRoot">
-      <button class="btn btn-outline-secondary btn-sm" (click)="loadMoreRoot(node)">
+      <button class="btn btn-outline-secondary btn-sm" (click)="loadMoreRoot(node)"
+              [attr.aria-label]="'vocabulary-treeview.load-more' | translate">
         {{'vocabulary-treeview.load-more' | translate}}...
       </button>
     </cdk-tree-node>