diff --git a/OpenRA.Mods.Common/Traits/Player/BaseAttackNotifier.cs b/OpenRA.Mods.Common/Traits/Player/BaseAttackNotifier.cs
index 307bc296f8..78a2f0072e 100644
--- a/OpenRA.Mods.Common/Traits/Player/BaseAttackNotifier.cs
+++ b/OpenRA.Mods.Common/Traits/Player/BaseAttackNotifier.cs
@@ -28,6 +28,10 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("The audio notification type to play.")]
 		public string Notification = "BaseAttack";
 
+		[Desc("The audio notification to play to allies when under attack.",
+			"Won't play a notification to allies if this is null.")]
+		public string AllyNotification = null;
+
 		public object Create(ActorInitializer init) { return new BaseAttackNotifier(init.Self, this); }
 	}
 
@@ -65,7 +69,13 @@ namespace OpenRA.Mods.Common.Traits
 
 			if (self.World.WorldTick - lastAttackTime > info.NotifyInterval * 25)
 			{
-				Game.Sound.PlayNotification(self.World.Map.Rules, self.Owner, "Speech", info.Notification, self.Owner.Faction.InternalName);
+				var rules = self.World.Map.Rules;
+				Game.Sound.PlayNotification(rules, self.Owner, "Speech", info.Notification, self.Owner.Faction.InternalName);
+
+				if (info.AllyNotification != null)
+					foreach (Player p in self.World.Players)
+						if (p != self.Owner && p.IsAlliedWith(self.Owner) && p != e.Attacker.Owner)
+							Game.Sound.PlayNotification(rules, p, "Speech", info.AllyNotification, p.Faction.InternalName);
 
 				if (radarPings != null)
 					radarPings.Add(() => self.Owner.IsAlliedWith(self.World.RenderPlayer), self.CenterPosition, info.RadarPingColor, info.RadarPingDuration);