diff --git a/lib/process-services-cloud/src/lib/process/start-process/components/start-process-cloud.component.spec.ts b/lib/process-services-cloud/src/lib/process/start-process/components/start-process-cloud.component.spec.ts
index ca145df371..e0f211bab6 100755
--- a/lib/process-services-cloud/src/lib/process/start-process/components/start-process-cloud.component.spec.ts
+++ b/lib/process-services-cloud/src/lib/process/start-process/components/start-process-cloud.component.spec.ts
@@ -993,6 +993,45 @@ describe('StartProcessCloudComponent', () => {
 
             expect(card).toBeTruthy();
         });
+
+    });
+
+    describe('start button', () => {
+        beforeEach(() => {
+            component.name = 'NewProcess 1';
+            component.appName = 'myApp';
+            component.ngOnChanges({ appName: firstChange });
+            component.processDefinitionList = fakeProcessDefinitions;
+            component.processDefinitionName = fakeProcessDefinitions[0].name;
+        });
+
+        it('start process button should be enabled when isLoading is false', async () => {
+            fixture.detectChanges();
+            component.processForm.controls['processInstanceName'].setValue(fakeProcessDefinitions[0].id);
+            component.appName = 'test app name';
+            component.isLoading = false;
+            fixture.detectChanges();
+            await fixture.whenStable();
+
+            const startButton = fixture.debugElement.query(By.css('#button-start'));
+            expect(startButton).not.toBeNull();
+            expect(component.disableStartButton()).toBeFalse();
+            expect((startButton.nativeElement as HTMLButtonElement).disabled).toBeFalse();
+        });
+
+        it('start process button should be disabled when isLoading is true', async () => {
+            fixture.detectChanges();
+            component.processForm.controls['processInstanceName'].setValue(fakeProcessDefinitions[0].id);
+            component.appName = 'test app name';
+            component.isLoading = true;
+            fixture.detectChanges();
+            await fixture.whenStable();
+
+            const startButton = fixture.debugElement.query(By.css('#button-start'));
+            expect(startButton).not.toBeNull();
+            expect(component.disableStartButton()).toBeTrue();
+            expect((startButton.nativeElement as HTMLButtonElement).disabled).toBeTrue();
+        });
     });
 
     describe('cancel process', () => {
diff --git a/lib/process-services-cloud/src/lib/process/start-process/components/start-process-cloud.component.ts b/lib/process-services-cloud/src/lib/process/start-process/components/start-process-cloud.component.ts
index b21e88aa2f..9be1da0093 100755
--- a/lib/process-services-cloud/src/lib/process/start-process/components/start-process-cloud.component.ts
+++ b/lib/process-services-cloud/src/lib/process/start-process/components/start-process-cloud.component.ts
@@ -391,7 +391,7 @@ export class StartProcessCloudComponent implements OnChanges, OnInit, OnDestroy
         this.onDestroy$.complete();
     }
 
-    disableStartButton() {
-        return !this.appName || !this.processDefinition.valid;
+    disableStartButton(): boolean {
+        return !this.appName || !this.processDefinition.valid || this.isLoading;
     }
 }