diff --git a/ext/tox/extconf.rb b/ext/tox/extconf.rb
index 3d4e464..b8465f5 100755
--- a/ext/tox/extconf.rb
+++ b/ext/tox/extconf.rb
@@ -28,11 +28,6 @@ have_library LIBTOXCORE, 'tox_friend_add_norequest' and
 have_library LIBTOXCORE, 'tox_friend_send_message' and
 have_library LIBTOXCORE, 'tox_callback_friend_request' and
 have_library LIBTOXCORE, 'tox_callback_friend_message' and
-have_library LIBTOXCORE, 'tox_join_groupchat' and
-have_library LIBTOXCORE, 'tox_group_message_send' and
-have_library LIBTOXCORE, 'tox_callback_group_invite' and
-have_library LIBTOXCORE, 'tox_callback_group_message' and
-have_library LIBTOXCORE, 'tox_group_peernumber_is_ours' and
 have_library LIBTOXCORE, 'tox_self_get_name_size' and
 have_library LIBTOXCORE, 'tox_self_get_name' and
 have_library LIBTOXCORE, 'tox_self_set_name' and
diff --git a/ext/tox/tox.c b/ext/tox/tox.c
index ea7bec1..0d9163f 100644
--- a/ext/tox/tox.c
+++ b/ext/tox/tox.c
@@ -40,9 +40,6 @@ static VALUE cTox_kill(VALUE self);
 static VALUE cTox_loop(VALUE self);
 static VALUE cTox_friend_add_norequest(VALUE self, VALUE key);
 static VALUE cTox_friend_send_message(VALUE self, VALUE friend_number, VALUE text);
-static VALUE cTox_join_groupchat(VALUE self, VALUE friend_number, VALUE data);
-static VALUE cTox_group_message_send(VALUE self, VALUE group_number, VALUE text);
-static VALUE cTox_group_peernumber_is_ours(VALUE self, VALUE group_number, VALUE peer_number);
 static VALUE cTox_name(VALUE self);
 static VALUE cTox_name_ASSIGN(VALUE self, VALUE name);
 static VALUE cTox_status_message(VALUE self);
@@ -63,24 +60,6 @@ static void on_friend_message(
   size_t length,
   VALUE self);
 
-static void on_group_invite(
-    Tox *tox,
-    int32_t friend_number,
-    uint8_t type,
-    const uint8_t *data,
-    uint16_t length,
-    VALUE self
-  );
-
-static void on_group_message(
-    Tox *tox,
-    int group_number,
-    int peer_number,
-    const uint8_t *text,
-    uint16_t length,
-    VALUE self
-  );
-
 typedef struct Tox_Options cTox_cOptions_;
 
 static VALUE cTox_cOptions;
@@ -105,9 +84,6 @@ void Init_tox()
   rb_define_method(cTox, "loop", cTox_loop, 0);
   rb_define_method(cTox, "friend_add_norequest", cTox_friend_add_norequest, 1);
   rb_define_method(cTox, "friend_send_message", cTox_friend_send_message, 2);
-  rb_define_method(cTox, "join_groupchat", cTox_join_groupchat, 2);
-  rb_define_method(cTox, "group_message_send", cTox_group_message_send, 2);
-  rb_define_method(cTox, "group_peernumber_is_ours", cTox_group_peernumber_is_ours, 2);
   rb_define_method(cTox, "name", cTox_name, 0);
   rb_define_method(cTox, "name=", cTox_name_ASSIGN, 1);
   rb_define_method(cTox, "status_message", cTox_status_message, 0);
@@ -170,14 +146,6 @@ VALUE cTox_initialize_with(const VALUE self, const VALUE options)
 
   tox_callback_friend_request(tox->tox, (tox_friend_request_cb*)on_friend_request, (void*)self);
   tox_callback_friend_message(tox->tox, (tox_friend_message_cb*)on_friend_message, (void*)self);
-  tox_callback_group_invite(
-    tox->tox,
-    (void (*)(struct Tox *, int32_t, uint8_t, const uint8_t *, uint16_t, void *))on_group_invite,
-    (void*)self);
-  tox_callback_group_message(
-    tox->tox,
-    (void (*)(struct Tox *, int, int, const uint8_t *, uint16_t, void *))on_group_message,
-    (void*)self);
 
   return self;
 }
@@ -321,65 +289,6 @@ VALUE cTox_friend_send_message(const VALUE self, const VALUE friend_number, cons
   ));
 }
 
-VALUE cTox_join_groupchat(const VALUE self, const VALUE friend_number, const VALUE data)
-{
-  cTox_ *tox;
-
-  // Don't know yet how to check for integers
-  // Check_Type(friend_number, T_INTEGER);
-  Check_Type(data, T_STRING);
-
-  Data_Get_Struct(self, cTox_, tox);
-
-  return INT2FIX(tox_join_groupchat(
-    tox->tox,
-    NUM2LONG(friend_number),
-    (uint8_t*)RSTRING_PTR(data),
-    RSTRING_LEN(data)
-  ));
-}
-
-VALUE cTox_group_message_send(const VALUE self, const VALUE group_number, const VALUE text)
-{
-  cTox_ *tox;
-
-  // Don't know yet how to check for integers
-  // Check_Type(group_number, T_INTEGER);
-  Check_Type(text, T_STRING);
-
-  Data_Get_Struct(self, cTox_, tox);
-
-  return INT2FIX(tox_group_message_send(
-    tox->tox,
-    NUM2LONG(group_number),
-    (uint8_t*)RSTRING_PTR(text),
-    RSTRING_LEN(text)
-  ));
-}
-
-VALUE cTox_group_peernumber_is_ours(
-  const VALUE self,
-  const VALUE group_number,
-  const VALUE peer_number)
-{
-  cTox_ *tox;
-
-  // Don't know yet how to check for integers
-  // Check_Type(group_number, T_INTEGER);
-  // Check_Type(peer_number, T_INTEGER);
-
-  Data_Get_Struct(self, cTox_, tox);
-
-  if (tox_group_peernumber_is_ours(
-    tox->tox,
-    NUM2INT(group_number),
-    NUM2INT(peer_number))
-  )
-    return Qtrue;
-  else
-    return Qfalse;
-}
-
 VALUE cTox_name(const VALUE self)
 {
   cTox_ *tox;
@@ -498,51 +407,6 @@ void on_friend_message(
     );
 }
 
-static void on_group_invite(
-    Tox *const tox,
-    const int32_t friend_number,
-    const uint8_t type,
-    const uint8_t *const data,
-    const uint16_t length,
-    const VALUE self)
-{
-  VALUE rb_on_group_invite;
-
-  rb_on_group_invite = rb_iv_get(self, "@on_group_invite");
-
-  if (Qnil != rb_on_group_invite)
-    rb_funcall(
-      rb_on_group_invite,
-      rb_intern("call"),
-      2,
-      LONG2FIX(friend_number),
-      rb_str_new((char*)data, length)
-    );
-}
-
-static void on_group_message(
-    Tox *const tox,
-    const int group_number,
-    const int peer_number,
-    const uint8_t *const text,
-    const uint16_t length,
-    const VALUE self)
-{
-  VALUE rb_on_group_message;
-
-  rb_on_group_message = rb_iv_get(self, "@on_group_message");
-
-  if (Qnil != rb_on_group_message)
-    rb_funcall(
-      rb_on_group_message,
-      rb_intern("call"),
-      3,
-      LONG2FIX(group_number),
-      LONG2FIX(peer_number),
-      rb_str_new((char*)text, length)
-    );
-}
-
 /******************************************************************************
  * Tox::Options
  ******************************************************************************/
diff --git a/lib/lita/adapters/tox.rb b/lib/lita/adapters/tox.rb
index 768bcea..4a61bb1 100644
--- a/lib/lita/adapters/tox.rb
+++ b/lib/lita/adapters/tox.rb
@@ -45,20 +45,6 @@ module Lita
           message.command!
           robot.receive(message)
         end
-
-        @tox.on_group_invite do |friend_number, data|
-          @tox.join_groupchat(friend_number, data)
-        end
-
-        @tox.on_group_message do |group_number, peer_number, text|
-          unless @tox.group_peernumber_is_ours(group_number, peer_number)
-            user = User.new(-1 - peer_number) # TODO
-            source = Source.new(user: user, room: group_number)
-            message = Message.new(robot, text, source)
-
-            robot.receive(message)
-          end
-        end
       end
 
       def run
@@ -77,11 +63,7 @@ module Lita
 
       def send_messages(target, messages)
         messages.reject(&:empty?).each do |message|
-          if target.user.id.to_i >= 0
-            @tox.friend_send_message(target.user.id.to_i, message)
-          else
-            @tox.group_message_send(target.room.to_i, message)
-          end
+          @tox.friend_send_message(target.user.id.to_i, message)
         end
       end
     end
diff --git a/lib/tox.rb b/lib/tox.rb
index f390ecf..ccab134 100644
--- a/lib/tox.rb
+++ b/lib/tox.rb
@@ -50,12 +50,4 @@ class Tox
   def on_friend_message(&block)
     @on_friend_message = block
   end
-
-  def on_group_invite(&block)
-    @on_group_invite = block
-  end
-
-  def on_group_message(&block)
-    @on_group_message = block
-  end
 end