diff --git a/enum_column.gemspec b/enum_column.gemspec
index ec33446..4a3ddf6 100644
--- a/enum_column.gemspec
+++ b/enum_column.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name = %q{enum_column3}
-  s.version = "0.1.4"
+  s.version = "0.1.5"
   s.authors = ['Nick Pohodnya']
 
   s.files = [
diff --git a/lib/enum/enum_adapter.rb b/lib/enum/enum_adapter.rb
index a58b4c4..5818eba 100644
--- a/lib/enum/enum_adapter.rb
+++ b/lib/enum/enum_adapter.rb
@@ -17,7 +17,7 @@
 
 column_class.module_eval do
 
-  alias __klass_enum klass
+
   # The class for enum is Symbol.
   def klass
     if type == :enum
@@ -26,8 +26,8 @@ def klass
       __klass_enum
     end
   end
+  alias __klass_enum klass
 
-  alias __type_cast_enum type_cast
   # Convert to a symbol.
   def type_cast(value)
     if type == :enum
@@ -36,9 +36,9 @@ def type_cast(value)
       __type_cast_enum(value)
     end
   end
+  alias __type_cast_enum type_cast
 
   if respond_to?(:type_cast_code)
-    alias __type_cast_code_enum type_cast_code
     # Code to convert to a symbol.
     def type_cast_code(var_name)
       if type == :enum
@@ -47,6 +47,7 @@ def type_cast_code(var_name)
         __type_cast_code_enum(var_name)
       end
     end
+    alias __type_cast_code_enum type_cast_code
   end
 
   class << self
@@ -64,7 +65,6 @@ def value_to_symbol(value)
   end
 
 private
-  alias __simplified_type_enum simplified_type
   # The enum simple type.
   def simplified_type(field_type)
     if field_type =~ /enum/i
@@ -73,8 +73,8 @@ def simplified_type(field_type)
       __simplified_type_enum(field_type)
     end
   end
-  
-  alias __extract_limit_enum extract_limit
+  alias __simplified_type_enum simplified_type
+
   def extract_limit(sql_type)
     if sql_type =~ /^enum/i
       sql_type.sub(/^enum\('(.+)'\)/i, '\1').split("','").map { |v| v.intern }
@@ -82,6 +82,6 @@ def extract_limit(sql_type)
       __extract_limit_enum(sql_type)
     end
   end
-
+  alias __extract_limit_enum extract_limit
 
 end
diff --git a/lib/enum/mysql_adapter.rb b/lib/enum/mysql_adapter.rb
index 7ce64d5..ee1619d 100644
--- a/lib/enum/mysql_adapter.rb
+++ b/lib/enum/mysql_adapter.rb
@@ -7,11 +7,12 @@
 end
 
 adapter_class.module_eval do
-  alias __native_database_types_enum native_database_types
 
   def native_database_types #:nodoc
     types = __native_database_types_enum
     types[:enum] = { :name => "enum" }
     types
   end
+  alias __native_database_types_enum native_database_types
+
 end
\ No newline at end of file