diff --git a/knockknock/desktop_sender.py b/knockknock/desktop_sender.py
index 4aea957..35c0f67 100644
--- a/knockknock/desktop_sender.py
+++ b/knockknock/desktop_sender.py
@@ -22,7 +22,7 @@ def show_notification(text: str, title: str):
             try:
                 from win10toast import ToastNotifier
             except ImportError as err:
-                print('Error: to use Windows Desktop Notifications, you need to install `win10toast` first. Please run `pip install win10toast==0.9`.')
+                raise ImportError('Error: to use Windows Desktop Notifications, you need to install `win10toast` first. Please run `pip install win10toast==0.9`.')
 
             toaster = ToastNotifier()
             toaster.show_toast(title,