-forAllTyErr ty = sep [ptext SLIT("Illegal polymorphic or qualified type:"), ppr ty]
-unliftedArgErr ty = sep [ptext SLIT("Illegal unlifted type:"), ppr ty]
-ubxArgTyErr ty = sep [ptext SLIT("Illegal unboxed tuple type as function argument:"), ppr ty]
-kindErr kind = sep [ptext SLIT("Expecting an ordinary type, but found a type of kind"), ppr kind]
+forAllTyErr ty = sep [ptext (sLit "Illegal polymorphic or qualified type:"), ppr ty]
+unliftedArgErr ty = sep [ptext (sLit "Illegal unlifted type:"), ppr ty]
+ubxArgTyErr ty = sep [ptext (sLit "Illegal unboxed tuple type as function argument:"), ppr ty]
+kindErr kind = sep [ptext (sLit "Expecting an ordinary type, but found a type of kind"), ppr kind]