diff --git a/OpenRA.Mods.Common/Effects/Contrail.cs b/OpenRA.Mods.Common/Effects/Contrail.cs
index 04c952c488..2f34ae5158 100644
--- a/OpenRA.Mods.Common/Effects/Contrail.cs
+++ b/OpenRA.Mods.Common/Effects/Contrail.cs
@@ -23,7 +23,7 @@ namespace OpenRA.Mods.Common.Effects
 		[Desc("Position relative to body")]
 		public readonly WVec Offset = WVec.Zero;
 
-		[Desc("Measured in pixels.")]
+		[Desc("Length of the trail (in ticks).")]
 		public readonly int TrailLength = 25;
 
 		[Desc("RGB color of the contrail.")]