diff --git a/OpenRA.Mods.Common/Traits/SelfHealing.cs b/OpenRA.Mods.Common/Traits/SelfHealing.cs
index 0b17489789..ed39fcaa38 100644
--- a/OpenRA.Mods.Common/Traits/SelfHealing.cs
+++ b/OpenRA.Mods.Common/Traits/SelfHealing.cs
@@ -16,10 +16,18 @@ namespace OpenRA.Mods.Common.Traits
 	[Desc("Attach this to actors which should be able to regenerate their health points.")]
 	class SelfHealingInfo : UpgradableTraitInfo, Requires<HealthInfo>
 	{
+		[Desc("Absolute amount of health points added in each step.")]
 		public readonly int Step = 5;
+
+		[Desc("Relative percentages of health added in each step.",
+			"When both values are defined, their summary will be applied.")]
+		public readonly int PercentageStep = 0;
+
 		public readonly int Delay = 5;
+
 		[Desc("Heal if current health is below this percentage of full health.")]
 		public readonly int HealIfBelow = 50;
+
 		public readonly int DamageCooldown = 0;
 
 		public override object Create(ActorInitializer init) { return new SelfHealing(init.Self, this); }
@@ -55,7 +63,7 @@ namespace OpenRA.Mods.Common.Traits
 			if (--ticks <= 0)
 			{
 				ticks = Info.Delay;
-				self.InflictDamage(self, new Damage(-Info.Step));
+				self.InflictDamage(self, new Damage(-(Info.Step + Info.PercentageStep * health.MaxHP / 100)));
 			}
 		}