diff --git a/ProjectClock.xcodeproj/project.pbxproj b/ProjectClock.xcodeproj/project.pbxproj
index 4dd0dd6..0702af7 100644
--- a/ProjectClock.xcodeproj/project.pbxproj
+++ b/ProjectClock.xcodeproj/project.pbxproj
@@ -83,25 +83,25 @@
 		4FF0683D25A5F18700304E6B /* ProjectClock */ = {
 			isa = PBXGroup;
 			children = (
-				7C5DAE9B25AF812200E44C52 /* clock.png */,
-				4FF0684C25A5F18800304E6B /* Info.plist */,
-				7C83962D25AF34F00027A94C /* ProjectClock.entitlements */,
-				4FF0684925A5F18800304E6B /* LaunchScreen.storyboard */,
-				4FF0684725A5F18800304E6B /* Assets.xcassets */,
-				4FF0683E25A5F18700304E6B /* AppDelegate.swift */,
 				4FF0684225A5F18700304E6B /* AccountViewController.swift */,
-				4FA419AE25AF93EC004CE0FC /* AlarmViewController.swift */,
 				4F8A607025A9160400D88DC3 /* AddAlarmViewController.swift */,
-				F0DF7C0625BCD9FC0064A26B /* StopwatchViewController.swift */,
-				7C83963825AF68980027A94C /* DebugViewController.swift */,
-				7C12BC7725BE25C000E5659C /* Notification.swift */,
 				4FD642DF25B4D5F30069171E /* AlarmActivationViewController.swift */,
 				4FD642D225B48C380069171E /* AlarmActivator.swift */,
+				4FA419AE25AF93EC004CE0FC /* AlarmViewController.swift */,
+				4FF0683E25A5F18700304E6B /* AppDelegate.swift */,
+				4FF0684725A5F18800304E6B /* Assets.xcassets */,
+				7C5DAE9B25AF812200E44C52 /* clock.png */,
+				7C83963825AF68980027A94C /* DebugViewController.swift */,
+				4FF0684C25A5F18800304E6B /* Info.plist */,
+				4FF0684925A5F18800304E6B /* LaunchScreen.storyboard */,
 				4FF0684425A5F18700304E6B /* Main.storyboard */,
-				7C83963525AF375B0027A94C /* NotificationLogic.swift */,
-				4F98955125A9260400F51321 /* Net.swift */,
-				4F509BD125AE22D100726227 /* Models.swift */,
 				C7E638E725B88F8B00799512 /* MathExpressions.swift */,
+				4F509BD125AE22D100726227 /* Models.swift */,
+				4F98955125A9260400F51321 /* Net.swift */,
+				7C12BC7725BE25C000E5659C /* Notification.swift */,
+				7C83963525AF375B0027A94C /* NotificationLogic.swift */,
+				7C83962D25AF34F00027A94C /* ProjectClock.entitlements */,
+				F0DF7C0625BCD9FC0064A26B /* StopwatchViewController.swift */,
 				4FD642DA25B4B7F60069171E /* Utils.swift */,
 			);
 			path = ProjectClock;
diff --git a/ProjectClock/Notification.swift b/ProjectClock/Notification.swift
index 4d9e4d1..654a519 100644
--- a/ProjectClock/Notification.swift
+++ b/ProjectClock/Notification.swift
@@ -28,6 +28,7 @@ class Notification {
         content.title = alarm.text
         content.subtitle = formatter1.string(from: today)
         content.body = "Wake method: \(alarm.wakeMethod.name)"
+        content.sound = UNNotificationSound.defaultCriticalSound(withAudioVolume: 1.0)
         
         // Notification image content
         let imageName = "clock"