diff --git a/OpenRA.Game/Chat.cs b/OpenRA.Game/Chat.cs
index c8fc3ba179..ac68dc5dcc 100644
--- a/OpenRA.Game/Chat.cs
+++ b/OpenRA.Game/Chat.cs
@@ -57,7 +57,7 @@ namespace OpenRA
 				if (typing.Length > 0)
 					typing = typing.Remove(typing.Length - 1);
 			}
-			else
+			else if (!char.IsControl(c))
 				typing += c;
 		}