diff --git a/thun/thun.pl b/thun/thun.pl
index b235003..985c877 100644
--- a/thun/thun.pl
+++ b/thun/thun.pl
@@ -88,7 +88,7 @@ thun( [Func|E], Si, So) :- func(Func, Si, S), thun(E, S, So).
 thun([Combo|E], Si, So) :- combo(Combo, Si, S, E, Eo), thun(Eo, S, So).
 
 % Some error handling.
-thun([Unknown|E], Si, So) :- write("wtf? "), writeln(Unknown), So = [[Unknown|E]|Si].
+% thun([Unknown|E], Si, So) :- write("wtf? "), writeln(Unknown), So = [[Unknown|E]|Si].
 
 /*
 Literals