diff --git a/OpenRA.Game/Traits/World/ActorMap.cs b/OpenRA.Game/Traits/World/ActorMap.cs
index 022f9341d0..7bb3911ecf 100644
--- a/OpenRA.Game/Traits/World/ActorMap.cs
+++ b/OpenRA.Game/Traits/World/ActorMap.cs
@@ -154,13 +154,17 @@ namespace OpenRA.Traits
 		public void AddInfluence(Actor self, IOccupySpace ios)
 		{
 			foreach (var c in ios.OccupiedCells())
-				influence[c.First] = new InfluenceNode { Next = influence[c.First], SubCell = c.Second, Actor = self };
+				if (map.Contains(c.First))
+					influence[c.First] = new InfluenceNode { Next = influence[c.First], SubCell = c.Second, Actor = self };
 		}
 
 		public void RemoveInfluence(Actor self, IOccupySpace ios)
 		{
 			foreach (var c in ios.OccupiedCells())
 			{
+				if (!map.Contains(c.First))
+					continue;
+
 				var temp = influence[c.First];
 				RemoveInfluenceInner(ref temp, self);
 				influence[c.First] = temp;
diff --git a/OpenRA.Mods.RA/EjectOnDeath.cs b/OpenRA.Mods.RA/EjectOnDeath.cs
index 1dc3417550..f2132669be 100644
--- a/OpenRA.Mods.RA/EjectOnDeath.cs
+++ b/OpenRA.Mods.RA/EjectOnDeath.cs
@@ -33,7 +33,7 @@ namespace OpenRA.Mods.RA
 	{
 		public void Killed(Actor self, AttackInfo e)
 		{
-			if (self.Owner.WinState == WinState.Lost)
+			if (self.Owner.WinState == WinState.Lost || !self.World.Map.Contains(self.Location))
 				return;
 
 			var r = self.World.SharedRandom.Next(1, 100);
diff --git a/OpenRA.Mods.RA/ParaDrop.cs b/OpenRA.Mods.RA/ParaDrop.cs
index 1cadb153c3..80888a3c61 100644
--- a/OpenRA.Mods.RA/ParaDrop.cs
+++ b/OpenRA.Mods.RA/ParaDrop.cs
@@ -77,6 +77,9 @@ namespace OpenRA.Mods.RA
 			if (droppedAt.Contains(self.Location) || checkForSuitableCell && !IsSuitableCell(cargo.Peek(self), self.Location))
 				return;
 
+			if (!self.World.Map.Contains(self.Location))
+				return;
+
 			// unload a dude here
 			droppedAt.Add(self.Location);