diff --git a/OpenRA.Mods.Common/Traits/AutoTarget.cs b/OpenRA.Mods.Common/Traits/AutoTarget.cs
index ec8aedeca3..bd4e391a21 100644
--- a/OpenRA.Mods.Common/Traits/AutoTarget.cs
+++ b/OpenRA.Mods.Common/Traits/AutoTarget.cs
@@ -294,6 +294,7 @@ namespace OpenRA.Mods.Common.Traits
 			foreach (var target in targetsInRange)
 			{
 				BitSet<TargetableType> targetTypes;
+				Player owner;
 				if (target.Type == TargetType.Actor)
 				{
 					// PERF: Most units can only attack enemy units. If this is the case but the target is not an enemy, we
@@ -308,6 +309,8 @@ namespace OpenRA.Mods.Common.Traits
 
 					if (PreventsAutoTarget(self, target.Actor) || !target.Actor.CanBeViewedByPlayer(self.Owner))
 						continue;
+
+					owner = target.Actor.Owner;
 				}
 				else if (target.Type == TargetType.FrozenActor)
 				{
@@ -315,6 +318,7 @@ namespace OpenRA.Mods.Common.Traits
 						continue;
 
 					targetTypes = target.FrozenActor.TargetTypes;
+					owner = target.FrozenActor.Owner;
 				}
 				else
 					continue;
@@ -325,6 +329,10 @@ namespace OpenRA.Mods.Common.Traits
 					if (ati.Priority < chosenTargetPriority)
 						return false;
 
+					// Incompatible stances
+					if (!ati.ValidStances.HasStance(self.Owner.Stances[owner]))
+						return false;
+
 					// Incompatible target types
 					if (!ati.ValidTargets.Overlaps(targetTypes) || ati.InvalidTargets.Overlaps(targetTypes))
 						return false;
diff --git a/OpenRA.Mods.Common/Traits/AutoTargetPriority.cs b/OpenRA.Mods.Common/Traits/AutoTargetPriority.cs
index 1deb843a9c..75fc3be7f1 100644
--- a/OpenRA.Mods.Common/Traits/AutoTargetPriority.cs
+++ b/OpenRA.Mods.Common/Traits/AutoTargetPriority.cs
@@ -23,6 +23,9 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("Target types that can't be AutoTargeted.", "Overrules ValidTargets.")]
 		public readonly BitSet<TargetableType> InvalidTargets;
 
+		[Desc("Stances between actor's and target's owner which can be AutoTargeted.")]
+		public readonly Stance ValidStances = Stance.Ally | Stance.Neutral | Stance.Enemy;
+
 		[Desc("ValidTargets with larger priorities will be AutoTargeted before lower priorities.")]
 		public readonly int Priority = 1;