lib/lisp/interpreter/core/boolean.rb in lisp-interpreter-0.4.0 vs lib/lisp/interpreter/core/boolean.rb in lisp-interpreter-0.4.1

@@ -28,10 +28,10 @@
   end
 
   def not(other)
     raise arg_err_build 1, other.size if other.size != 1
     valid = check_for_bool other[0]
-    raise data_type_err '<boolean>', other[0].type unless valid
+    raise type_err '<boolean>', other[0].type unless valid
     other[0] == '#t' ? '#f' : '#t'
   end
 
   def if(other)
     raise arg_err_build 3, 0 if other.empty?