diff --git a/lib/process-services-cloud/src/lib/task/start-task/components/start-task-cloud.component.spec.ts b/lib/process-services-cloud/src/lib/task/start-task/components/start-task-cloud.component.spec.ts
index 7c3a4c14cc..e033b20fb0 100644
--- a/lib/process-services-cloud/src/lib/task/start-task/components/start-task-cloud.component.spec.ts
+++ b/lib/process-services-cloud/src/lib/task/start-task/components/start-task-cloud.component.spec.ts
@@ -213,4 +213,14 @@ describe('StartTaskCloudComponent', () => {
         fixture.detectChanges();
         expect(name.valid).toBeTruthy();
     });
+    it('should emit error when description have only white spaces', () => {
+        fixture.detectChanges();
+        let description = component.taskForm.controls['description'];
+        description.setValue('     ');
+        fixture.detectChanges();
+        expect(description.valid).toBeFalsy();
+        description.setValue('');
+        fixture.detectChanges();
+        expect(description.valid).toBeTruthy();
+    });
 });
diff --git a/lib/process-services-cloud/src/lib/task/start-task/components/start-task-cloud.component.ts b/lib/process-services-cloud/src/lib/task/start-task/components/start-task-cloud.component.ts
index 7f18cd8476..53087ac2b3 100644
--- a/lib/process-services-cloud/src/lib/task/start-task/components/start-task-cloud.component.ts
+++ b/lib/process-services-cloud/src/lib/task/start-task/components/start-task-cloud.component.ts
@@ -131,7 +131,7 @@ export class StartTaskCloudComponent implements OnInit, OnDestroy {
         this.taskForm = this.formBuilder.group({
             name: new FormControl(this.name, [Validators.required, Validators.maxLength(this.getMaxNameLength()), this.whitespaceValidator]),
             priority: new FormControl(),
-            description: new FormControl()
+            description: new FormControl('', [this.whitespaceValidator])
         });
     }
 
@@ -206,7 +206,7 @@ export class StartTaskCloudComponent implements OnInit, OnDestroy {
 
     public whitespaceValidator(control: FormControl) {
         const isWhitespace = (control.value || '').trim().length === 0;
-        const isValid = !isWhitespace;
+        const isValid = control.value.length === 0 || !isWhitespace;
         return isValid ? null : { 'whitespace': true };
     }
 
@@ -217,5 +217,4 @@ export class StartTaskCloudComponent implements OnInit, OnDestroy {
     get priorityController(): AbstractControl {
         return this.taskForm.get('priority');
     }
-
 }