diff --git a/core/src/utils/hardware-back-button.ts b/core/src/utils/hardware-back-button.ts
index beec2dfb91..9e7d9d690b 100644
--- a/core/src/utils/hardware-back-button.ts
+++ b/core/src/utils/hardware-back-button.ts
@@ -36,6 +36,7 @@ export function startHardwareBackButton(win: Window) {
       });
       const result = handler!();
       if (result) {
+        // tslint:disable-next-line:no-floating-promises
         result.then(() => busy = false);
       }
     }
diff --git a/core/src/utils/overlays.ts b/core/src/utils/overlays.ts
index 22b514f440..34dd5a8f90 100644
--- a/core/src/utils/overlays.ts
+++ b/core/src/utils/overlays.ts
@@ -1,4 +1,4 @@
-import { AnimationBuilder, HTMLIonOverlayElement, IonicConfig, OverlayInterface, BackButtonEvent } from '../interface';
+import { AnimationBuilder, BackButtonEvent, HTMLIonOverlayElement, IonicConfig, OverlayInterface } from '../interface';
 
 let lastId = 0;