diff --git a/lib/intercom-rails/config.rb b/lib/intercom-rails/config.rb
index 5c058a4..818afb0 100644
--- a/lib/intercom-rails/config.rb
+++ b/lib/intercom-rails/config.rb
@@ -9,14 +9,18 @@ def self.config_accessor(*args, &block)
       config_writer(*args, &block)
     end
 
+    def self.meta_class
+      class << self; self end
+    end
+
     def self.config_reader(name)
-      self.send(:define_singleton_method, name) do
+      meta_class.send(:define_method, name) do
         instance_variable_get("@#{name}")
       end
     end
 
     def self.config_writer(name, &block)
-      self.send(:define_singleton_method, "#{name}=") do |value|
+      meta_class.send(:define_method, "#{name}=") do |value|
         block.call(value) if block && (block.arity <= 1)
 
         if block && (block.arity > 1)
@@ -32,7 +36,7 @@ def self.config_group(name, &block)
       camelized_name = name.to_s.classify
       group = self.const_set(camelized_name, Class.new(self))
 
-      self.send(:define_singleton_method, name) do
+      meta_class.send(:define_method, name) do
         group
       end
 
diff --git a/lib/intercom-rails/version.rb b/lib/intercom-rails/version.rb
index ecd31a5..a010a80 100644
--- a/lib/intercom-rails/version.rb
+++ b/lib/intercom-rails/version.rb
@@ -1,3 +1,3 @@
 module IntercomRails
-  VERSION = "0.2.14"
+  VERSION = "0.2.15"
 end