diff --git a/src/app/shared/form/builder/ds-dynamic-form-ui/models/scrollable-dropdown/dynamic-scrollable-dropdown.component.html b/src/app/shared/form/builder/ds-dynamic-form-ui/models/scrollable-dropdown/dynamic-scrollable-dropdown.component.html
index 6e2d29b789..96fb78c0aa 100644
--- a/src/app/shared/form/builder/ds-dynamic-form-ui/models/scrollable-dropdown/dynamic-scrollable-dropdown.component.html
+++ b/src/app/shared/form/builder/ds-dynamic-form-ui/models/scrollable-dropdown/dynamic-scrollable-dropdown.component.html
@@ -41,10 +41,12 @@
          (scrolled)="onScroll()"
          [scrollWindow]="false">
 
-      <button class="dropdown-item disabled" *ngIf="optionsList && optionsList.length == 0">{{'form.no-results' | translate}}</button>
+      <button class="dropdown-item disabled" type="button" *ngIf="optionsList && optionsList.length == 0">
+        {{ 'form.no-results' | translate }}
+      </button>
       <button class="dropdown-item collection-item text-truncate" *ngFor="let listEntry of optionsList"
               (click)="onSelect(listEntry); sdRef.close()" (mousedown)="onSelect(listEntry); sdRef.close()"
-              title="{{ listEntry.display }}" role="option"
+              title="{{ listEntry.display }}" role="option" type="button"
               [attr.id]="listEntry.display == (currentValue|async) ? ('combobox_' + id + '_selected') : null">
         {{inputFormatter(listEntry)}}
       </button>
diff --git a/src/app/shared/form/form.service.ts b/src/app/shared/form/form.service.ts
index bf316daaed..e6c3776a42 100644
--- a/src/app/shared/form/form.service.ts
+++ b/src/app/shared/form/form.service.ts
@@ -130,6 +130,9 @@ export class FormService {
   }
 
   public addControlErrors(field: AbstractControl, formId: string, fieldId: string, fieldIndex: number) {
+    if (field.errors === null) {
+      return;
+    }
     const errors: string[] = Object.keys(field.errors)
       .filter((errorKey) => field.errors[errorKey] === true)
       .map((errorKey) => `error.validation.${errorKey}`);