diff --git a/OpenRa.Game/Traits/Activities/Rearm.cs b/OpenRa.Game/Traits/Activities/Rearm.cs
index 154334fb13..1d872894f1 100644
--- a/OpenRa.Game/Traits/Activities/Rearm.cs
+++ b/OpenRa.Game/Traits/Activities/Rearm.cs
@@ -1,4 +1,6 @@
-namespace OpenRa.Game.Traits.Activities
+using System.Linq;
+
+namespace OpenRa.Game.Traits.Activities
 {
 	class Rearm : IActivity
 	{
@@ -17,6 +19,13 @@
 			if (--remainingTicks == 0)
 			{
 				if (!limitedAmmo.GiveAmmo()) return NextActivity;
+
+				var hostBuilding = Game.FindUnits(self.CenterLocation, self.CenterLocation)
+					.FirstOrDefault(a => a.traits.Contains<RenderBuilding>());
+
+				if (hostBuilding != null)
+					hostBuilding.traits.Get<RenderBuilding>().PlayCustomAnim(hostBuilding, "active");
+
 				remainingTicks = ticksPerPip;
 			}
 
diff --git a/OpenRa.Game/Traits/RenderBuilding.cs b/OpenRa.Game/Traits/RenderBuilding.cs
index 9f67d544c5..2dd81f7266 100644
--- a/OpenRa.Game/Traits/RenderBuilding.cs
+++ b/OpenRa.Game/Traits/RenderBuilding.cs
@@ -56,6 +56,12 @@ namespace OpenRa.Game.Traits
 			return self.GetDamageState() == DamageState.Half ? "damaged-" : "";
 		}
 
+		public void PlayCustomAnim(Actor self, string name)
+		{
+			anim.PlayThen(GetPrefix(self) + name, 
+				() => anim.PlayRepeating(GetPrefix(self) + "idle"));
+		}
+
 		public virtual void Damaged(Actor self, AttackInfo e)
 		{
 			if (!e.DamageStateChanged)