diff --git a/src/components/nav/test/worst-case/app-module.ts b/src/components/nav/test/worst-case/app-module.ts
index 7ca77ca0e2..fcf2aae689 100644
--- a/src/components/nav/test/worst-case/app-module.ts
+++ b/src/components/nav/test/worst-case/app-module.ts
@@ -31,11 +31,11 @@ export class Base {
   ionViewWillUnload() {
     log(`${this._name} willUnload`);
   }
-  ionViewCanLeave() {
+  ionViewCanLeave(): boolean|Promise<any> {
     log(`${this._name} canLeave`);
     return true;
   }
-  ionViewCanEnter() {
+  ionViewCanEnter(): boolean|Promise<any> {
     log(`${this._name} canEnter`);
     return true;
   }