diff --git a/lib/method_source/code_helpers.rb b/lib/method_source/code_helpers.rb

index 6c1d53e..9d9da55 100644

--- a/lib/method_source/code_helpers.rb

+++ b/lib/method_source/code_helpers.rb

@@ -6,14 +6,14 @@ module CodeHelpers

     # This is useful to get module or method source code.

     #

     # @param [Array<String>, File, String] file  The file to parse, either as a File or as

-    # @param [Fixnum]  line_number  The line number at which to look.

+    # @param [Integer]  line_number  The line number at which to look.

     #                             NOTE: The first line in a file is

     #                           line 1!

     # @param [Hash] options The optional configuration parameters.

     # @option options [Boolean] :strict  If set to true, then only completely

     #   valid expressions are returned. Otherwise heuristics are used to extract

     #   expressions that may have been valid inside an eval.

-    # @option options [Fixnum] :consume  A number of lines to automatically

+    # @option options [Integer] :consume  A number of lines to automatically

     #   consume (add to the expression buffer) without checking for validity.

     # @return [String]  The first complete expression

     # @raise [SyntaxError]  If the first complete expression can't be identified

@@ -46,7 +46,7 @@ def expression_at(file, line_number, options={})

     #

     # @param [Array<String>, File, String] file  The file to parse, either as a File or as

     #                                            a String or an Array of lines.

-    # @param [Fixnum]  line_number  The line number at which to look.

+    # @param [Integer]  line_number  The line number at which to look.

     #                             NOTE: The first line in a file is line 1!

     # @return [String]  The comment

     def comment_describing(file, line_number)

@@ -84,7 +84,7 @@ def complete_expression?(str)

     # Get the first expression from the input.

     #

     # @param [Array<String>]  lines

-    # @param [Fixnum] consume A number of lines to automatically

+    # @param [Integer] consume A number of lines to automatically

     #   consume (add to the expression buffer) without checking for validity.

     # @yield a clean-up function to run before checking for complete_expression

     # @return [String]  a valid ruby expression

diff --git a/lib/method_source/source_location.rb b/lib/method_source/source_location.rb

index 1e2a22a..7629869 100644

--- a/lib/method_source/source_location.rb

+++ b/lib/method_source/source_location.rb

@@ -111,7 +111,7 @@ def source_location

           case

           when klass == Symbol

             return :a.method(name).source_location

-          when klass == Fixnum

+          when klass == Integer

             return 0.method(name).source_location

           when klass == TrueClass

             return true.method(name).source_location