diff --git a/OpenRA.Mods.RA/TakeCover.cs b/OpenRA.Mods.RA/TakeCover.cs
index 13bc1f4be2..697a76a9d8 100644
--- a/OpenRA.Mods.RA/TakeCover.cs
+++ b/OpenRA.Mods.RA/TakeCover.cs
@@ -38,7 +38,7 @@ namespace OpenRA.Mods.RA
 
 		public void Damaged(Actor self, AttackInfo e)
 		{
-			if (e.Damage > 0 && e.Warhead == null || !e.Warhead.PreventProne) /* Don't go prone when healed */
+			if (e.Damage > 0 && (e.Warhead == null || !e.Warhead.PreventProne)) /* Don't go prone when healed */
 				remainingProneTime = Info.ProneTime;
 		}