diff --git a/src/frontend/app/visa/visa-workflow.component.html b/src/frontend/app/visa/visa-workflow.component.html
index 9b5bac6d43ac9f11739089c02bfb259b0e0d4403..314701bd92266f088d35779a6461c7baf2251bcf 100644
--- a/src/frontend/app/visa/visa-workflow.component.html
+++ b/src/frontend/app/visa/visa-workflow.component.html
@@ -85,7 +85,7 @@
                     <div class="workflowLineSubLabel">
                         {{diffusion.item_entity}}
                     </div>
-                    <div class="workflowLineSubLabel" *ngIf="adminMode && diffusion.process_date === null">
+                    <div class="workflowLineSubLabel" *ngIf="adminMode && functions.empty(diffusion.process_date)">
                         <mat-form-field>
                             <input matInput [disabled]="!adminMode || diffusion.process_date != null" [placeholder]="lang.visaNote" [(ngModel)]="diffusion.process_comment">
                         </mat-form-field>