diff --git a/lib/mathn.rb b/lib/mathn.rb
index 398188c..dfbc9b2 100644
--- a/lib/mathn.rb
+++ b/lib/mathn.rb
@@ -66,32 +66,14 @@ class Fixnum
 end

 ##
-# When mathn is required Bignum's division and exponentiation are enhanced to
+# When mathn is required Bignum's division is enhanced to
 # return more precise values from mathematical expressions.
+#
+#   (2**72) / ((2**70) * 3)  # => 4/3

 class Bignum
   remove_method :/
-
-  ##
-  # +/+ defines the Rational division for Bignum.
-  #
-  #   (2**72) / ((2**70) * 3)  # => 4/3
-
-  alias / quo
-
-  alias power! ** unless method_defined? :power!
-
-  ##
-  # Exponentiate by +other+
-
-  def ** (other)
-    if self < 0 && other.round != other
-      Complex(self, 0.0) ** other
-    else
-      power!(other)
-    end
-  end
-
+  alias :/ :quo
 end

 ##