diff --git a/dmp-frontend/src/app/ui/misc/dataset-description-form/components/form-field/form-field.component.html b/dmp-frontend/src/app/ui/misc/dataset-description-form/components/form-field/form-field.component.html
index dc0f7c14c..ccfc2e038 100644
--- a/dmp-frontend/src/app/ui/misc/dataset-description-form/components/form-field/form-field.component.html
+++ b/dmp-frontend/src/app/ui/misc/dataset-description-form/components/form-field/form-field.component.html
@@ -134,7 +134,7 @@
 		</div>
 		<div class="col-12 d-flex justify-content-center attach-btn">
 			<button *ngIf="!form.value.value || filesToUpload" mat-button (click)="drop.showFileSelector()" type="button" class="attach-file-btn"
-					[disabled]="form.value.value">
+					[disabled]="!!form.value.value">
 				<mat-icon class="mr-2">upload</mat-icon>
 				<mat-label>{{ (form.get('data').value.label | translate)}}</mat-label>
 			</button>