diff --git a/lib/process-services/task-list/components/task-header.component.spec.ts b/lib/process-services/task-list/components/task-header.component.spec.ts
index a2d25fb5cb..38f103ab7e 100644
--- a/lib/process-services/task-list/components/task-header.component.spec.ts
+++ b/lib/process-services/task-list/components/task-header.component.spec.ts
@@ -292,6 +292,21 @@ describe('TaskHeaderComponent', () => {
         });
     }));
 
+    it('should set clickable to false if the task has already completed', async(() => {
+        component.taskDetails.endDate = new Date('05/05/2002');
+        component.formName = 'test form';
+        component.refreshData();
+        fixture.detectChanges();
+
+        fixture.whenStable().then(() => {
+            const clickableForm = fixture.debugElement.query(By.css('[data-automation-id="header-formName"] .adf-textitem-clickable-value'));
+            expect(clickableForm).toBeNull();
+
+            const readOnlyForm = fixture.debugElement.query(By.css('[data-automation-id="header-formName"] .adf-textitem-ellipsis'));
+            expect(readOnlyForm.nativeElement.innerText).toBe('test form');
+        });
+    }));
+
     it('should display the default parent value if is undefined', async(() => {
         component.taskDetails.processInstanceId = null;
         component.refreshData();
diff --git a/lib/process-services/task-list/components/task-header.component.ts b/lib/process-services/task-list/components/task-header.component.ts
index f2bc4e8b14..1b2687dd2f 100644
--- a/lib/process-services/task-list/components/task-header.component.ts
+++ b/lib/process-services/task-list/components/task-header.component.ts
@@ -190,7 +190,7 @@ export class TaskHeaderComponent implements OnChanges, OnInit {
                     value: this.formName,
                     key: 'formName',
                     default: this.translationService.instant('ADF_TASK_LIST.PROPERTIES.FORM_NAME_DEFAULT'),
-                    clickable: !!this.formName,
+                    clickable: this.isFormClickable(),
                     icon: 'create'
                 }
             )
@@ -311,6 +311,10 @@ export class TaskHeaderComponent implements OnChanges, OnInit {
         return this.taskDetails && !!this.taskDetails.endDate;
     }
 
+    isFormClickable(): boolean {
+        return !!this.formName && !this.isCompleted();
+    }
+
     getTaskDuration(): string {
         return this.taskDetails.duration ? `${this.taskDetails.duration} ms` : '';
     }