diff --git a/OpenRA.Mods.Common/Projectiles/LaserZap.cs b/OpenRA.Mods.Common/Projectiles/LaserZap.cs
index 2819396213..b9ccd3ca79 100644
--- a/OpenRA.Mods.Common/Projectiles/LaserZap.cs
+++ b/OpenRA.Mods.Common/Projectiles/LaserZap.cs
@@ -106,7 +106,7 @@ namespace OpenRA.Mods.Common.Projectiles
 
 			if (ticks < info.BeamDuration)
 			{
-				var rc = Color.FromArgb((info.BeamDuration - ticks) * 255 / info.BeamDuration, color);
+				var rc = Color.FromArgb((info.BeamDuration - ticks) * color.A / info.BeamDuration, color);
 				yield return new BeamRenderable(args.Source, info.ZOffset, target - args.Source, info.Shape, info.Width, rc);
 			}