diff --git a/toxav/toxav_old.c b/toxav/toxav_old.c
index d5278623..24b4f1ec 100644
--- a/toxav/toxav_old.c
+++ b/toxav/toxav_old.c
@@ -39,7 +39,7 @@ int toxav_add_av_groupchat(Tox *tox, void (*audio_callback)(void *, uint32_t, ui
                            uint8_t, uint32_t, void *), void *userdata)
 {
     Messenger *m = (Messenger *)tox;
-    return add_av_groupchat(m->log, (Group_Chats *)m->conferences_object,
+    return add_av_groupchat(m->log, m->conferences_object,
                             (void (*)(Messenger *, uint32_t, uint32_t, const int16_t *, unsigned int, uint8_t, uint32_t, void *))audio_callback,
                             userdata);
 }
@@ -60,7 +60,7 @@ int toxav_join_av_groupchat(Tox *tox, uint32_t friendnumber, const uint8_t *data
                             void *userdata)
 {
     Messenger *m = (Messenger *)tox;
-    return join_av_groupchat(m->log, (Group_Chats *)m->conferences_object, friendnumber, data, length,
+    return join_av_groupchat(m->log, m->conferences_object, friendnumber, data, length,
                              (void (*)(Messenger *, uint32_t, uint32_t, const int16_t *, unsigned int, uint8_t, uint32_t, void *))audio_callback,
                              userdata);
 }
@@ -82,5 +82,5 @@ int toxav_group_send_audio(Tox *tox, uint32_t groupnumber, const int16_t *pcm, u
                            uint32_t sample_rate)
 {
     Messenger *m = (Messenger *)tox;
-    return group_send_audio((Group_Chats *)m->conferences_object, groupnumber, pcm, samples, channels, sample_rate);
+    return group_send_audio(m->conferences_object, groupnumber, pcm, samples, channels, sample_rate);
 }
diff --git a/toxcore/Messenger.h b/toxcore/Messenger.h
index 8cab9801..6fc4df02 100644
--- a/toxcore/Messenger.h
+++ b/toxcore/Messenger.h
@@ -272,7 +272,7 @@ struct Messenger {
     m_friend_connectionstatuschange_internal_cb *friend_connectionstatuschange_internal;
     void *friend_connectionstatuschange_internal_userdata;
 
-    void *conferences_object; /* Set by new_groupchats()*/
+    struct Group_Chats *conferences_object; /* Set by new_groupchats()*/
     m_conference_invite_cb *conference_invite;
 
     m_file_recv_cb *file_sendrequest;
diff --git a/toxcore/group.c b/toxcore/group.c
index 75b8697b..1ef3d374 100644
--- a/toxcore/group.c
+++ b/toxcore/group.c
@@ -1423,7 +1423,7 @@ int group_title_get(const Group_Chats *g_c, uint32_t groupnumber, uint8_t *title
 static void handle_friend_invite_packet(Messenger *m, uint32_t friendnumber, const uint8_t *data, uint16_t length,
                                         void *userdata)
 {
-    Group_Chats *g_c = (Group_Chats *)m->conferences_object;
+    Group_Chats *g_c = m->conferences_object;
 
     if (length <= 1) {
         return;
diff --git a/toxcore/tox.c b/toxcore/tox.c
index 2ccbef82..b2ea1969 100644
--- a/toxcore/tox.c
+++ b/toxcore/tox.c
@@ -497,12 +497,12 @@ Tox *tox_new(const struct Tox_Options *options, Tox_Err_New *error)
     callback_file_reqchunk(m, tox_file_chunk_request_handler);
     callback_file_sendrequest(m, tox_file_recv_handler);
     callback_file_data(m, tox_file_recv_chunk_handler);
-    g_callback_group_invite((Group_Chats *)m->conferences_object, tox_conference_invite_handler);
-    g_callback_group_connected((Group_Chats *)m->conferences_object, tox_conference_connected_handler);
-    g_callback_group_message((Group_Chats *)m->conferences_object, tox_conference_message_handler);
-    g_callback_group_title((Group_Chats *)m->conferences_object, tox_conference_title_handler);
-    g_callback_peer_name((Group_Chats *)m->conferences_object, tox_conference_peer_name_handler);
-    g_callback_peer_list_changed((Group_Chats *)m->conferences_object, tox_conference_peer_list_changed_handler);
+    g_callback_group_invite(m->conferences_object, tox_conference_invite_handler);
+    g_callback_group_connected(m->conferences_object, tox_conference_connected_handler);
+    g_callback_group_message(m->conferences_object, tox_conference_message_handler);
+    g_callback_group_title(m->conferences_object, tox_conference_title_handler);
+    g_callback_peer_name(m->conferences_object, tox_conference_peer_name_handler);
+    g_callback_peer_list_changed(m->conferences_object, tox_conference_peer_list_changed_handler);
     custom_lossy_packet_registerhandler(m, tox_friend_lossy_packet_handler);
     custom_lossless_packet_registerhandler(m, tox_friend_lossless_packet_handler);
 
@@ -517,7 +517,7 @@ void tox_kill(Tox *tox)
     }
 
     Messenger *m = tox->m;
-    kill_groupchats((Group_Chats *)m->conferences_object);
+    kill_groupchats(m->conferences_object);
     kill_messenger(m);
     free(tox);
 }
@@ -656,7 +656,7 @@ void tox_iterate(Tox *tox, void *user_data)
     Messenger *m = tox->m;
     struct Tox_Userdata tox_data = { tox, user_data };
     do_messenger(m, &tox_data);
-    do_groupchats((Group_Chats *)m->conferences_object, &tox_data);
+    do_groupchats(m->conferences_object, &tox_data);
 }
 
 void tox_self_get_address(const Tox *tox, uint8_t *address)
@@ -708,7 +708,7 @@ bool tox_self_set_name(Tox *tox, const uint8_t *name, size_t length, Tox_Err_Set
 
     if (setname(m, name, length) == 0) {
         // TODO(irungentoo): function to set different per group names?
-        send_name_all_groups((Group_Chats *)m->conferences_object);
+        send_name_all_groups(m->conferences_object);
         SET_ERROR_PARAMETER(error, TOX_ERR_SET_INFO_OK);
         return 1;
     }
@@ -1425,7 +1425,7 @@ void tox_callback_conference_peer_list_changed(Tox *tox, tox_conference_peer_lis
 uint32_t tox_conference_new(Tox *tox, Tox_Err_Conference_New *error)
 {
     Messenger *m = tox->m;
-    int ret = add_groupchat((Group_Chats *)m->conferences_object, GROUPCHAT_TYPE_TEXT);
+    int ret = add_groupchat(m->conferences_object, GROUPCHAT_TYPE_TEXT);
 
     if (ret == -1) {
         SET_ERROR_PARAMETER(error, TOX_ERR_CONFERENCE_NEW_INIT);
@@ -1439,7 +1439,7 @@ uint32_t tox_conference_new(Tox *tox, Tox_Err_Conference_New *error)
 bool tox_conference_delete(Tox *tox, uint32_t conference_number, Tox_Err_Conference_Delete *error)
 {
     Messenger *m = tox->m;
-    int ret = del_groupchat((Group_Chats *)m->conferences_object, conference_number);
+    int ret = del_groupchat(m->conferences_object, conference_number);
 
     if (ret == -1) {
         SET_ERROR_PARAMETER(error, TOX_ERR_CONFERENCE_DELETE_CONFERENCE_NOT_FOUND);
@@ -1453,7 +1453,7 @@ bool tox_conference_delete(Tox *tox, uint32_t conference_number, Tox_Err_Confere
 uint32_t tox_conference_peer_count(const Tox *tox, uint32_t conference_number, Tox_Err_Conference_Peer_Query *error)
 {
     const Messenger *m = tox->m;
-    int ret = group_number_peers((Group_Chats *)m->conferences_object, conference_number);
+    int ret = group_number_peers(m->conferences_object, conference_number);
 
     if (ret == -1) {
         SET_ERROR_PARAMETER(error, TOX_ERR_CONFERENCE_PEER_QUERY_CONFERENCE_NOT_FOUND);
@@ -1468,7 +1468,7 @@ size_t tox_conference_peer_get_name_size(const Tox *tox, uint32_t conference_num
         Tox_Err_Conference_Peer_Query *error)
 {
     const Messenger *m = tox->m;
-    int ret = group_peername_size((Group_Chats *)m->conferences_object, conference_number, peer_number);
+    int ret = group_peername_size(m->conferences_object, conference_number, peer_number);
 
     switch (ret) {
         case -1:
@@ -1488,7 +1488,7 @@ bool tox_conference_peer_get_name(const Tox *tox, uint32_t conference_number, ui
                                   Tox_Err_Conference_Peer_Query *error)
 {
     const Messenger *m = tox->m;
-    int ret = group_peername((Group_Chats *)m->conferences_object, conference_number, peer_number, name);
+    int ret = group_peername(m->conferences_object, conference_number, peer_number, name);
 
     switch (ret) {
         case -1:
@@ -1508,7 +1508,7 @@ bool tox_conference_peer_get_public_key(const Tox *tox, uint32_t conference_numb
                                         uint8_t *public_key, Tox_Err_Conference_Peer_Query *error)
 {
     const Messenger *m = tox->m;
-    int ret = group_peer_pubkey((Group_Chats *)m->conferences_object, conference_number, peer_number, public_key);
+    int ret = group_peer_pubkey(m->conferences_object, conference_number, peer_number, public_key);
 
     switch (ret) {
         case -1:
@@ -1528,7 +1528,7 @@ bool tox_conference_peer_number_is_ours(const Tox *tox, uint32_t conference_numb
                                         Tox_Err_Conference_Peer_Query *error)
 {
     const Messenger *m = tox->m;
-    int ret = group_peernumber_is_ours((Group_Chats *)m->conferences_object, conference_number, peer_number);
+    int ret = group_peernumber_is_ours(m->conferences_object, conference_number, peer_number);
 
     switch (ret) {
         case -1:
@@ -1552,7 +1552,7 @@ bool tox_conference_invite(Tox *tox, uint32_t friend_number, uint32_t conference
                            Tox_Err_Conference_Invite *error)
 {
     Messenger *m = tox->m;
-    int ret = invite_friend((Group_Chats *)m->conferences_object, friend_number, conference_number);
+    int ret = invite_friend(m->conferences_object, friend_number, conference_number);
 
     switch (ret) {
         case -1:
@@ -1576,7 +1576,7 @@ uint32_t tox_conference_join(Tox *tox, uint32_t friend_number, const uint8_t *co
                              Tox_Err_Conference_Join *error)
 {
     Messenger *m = tox->m;
-    int ret = join_groupchat((Group_Chats *)m->conferences_object, friend_number, GROUPCHAT_TYPE_TEXT, cookie, length);
+    int ret = join_groupchat(m->conferences_object, friend_number, GROUPCHAT_TYPE_TEXT, cookie, length);
 
     switch (ret) {
         case -1:
@@ -1615,9 +1615,9 @@ bool tox_conference_send_message(Tox *tox, uint32_t conference_number, Tox_Messa
     int ret = 0;
 
     if (type == TOX_MESSAGE_TYPE_NORMAL) {
-        ret = group_message_send((Group_Chats *)m->conferences_object, conference_number, message, length);
+        ret = group_message_send(m->conferences_object, conference_number, message, length);
     } else {
-        ret = group_action_send((Group_Chats *)m->conferences_object, conference_number, message, length);
+        ret = group_action_send(m->conferences_object, conference_number, message, length);
     }
 
     switch (ret) {
@@ -1645,7 +1645,7 @@ bool tox_conference_send_message(Tox *tox, uint32_t conference_number, Tox_Messa
 size_t tox_conference_get_title_size(const Tox *tox, uint32_t conference_number, Tox_Err_Conference_Title *error)
 {
     const Messenger *m = tox->m;
-    int ret = group_title_get_size((Group_Chats *)m->conferences_object, conference_number);
+    int ret = group_title_get_size(m->conferences_object, conference_number);
 
     switch (ret) {
         case -1:
@@ -1665,7 +1665,7 @@ bool tox_conference_get_title(const Tox *tox, uint32_t conference_number, uint8_
                               Tox_Err_Conference_Title *error)
 {
     const Messenger *m = tox->m;
-    int ret = group_title_get((Group_Chats *)m->conferences_object, conference_number, title);
+    int ret = group_title_get(m->conferences_object, conference_number, title);
 
     switch (ret) {
         case -1:
@@ -1685,7 +1685,7 @@ bool tox_conference_set_title(Tox *tox, uint32_t conference_number, const uint8_
                               Tox_Err_Conference_Title *error)
 {
     Messenger *m = tox->m;
-    int ret = group_title_send((Group_Chats *)m->conferences_object, conference_number, title, length);
+    int ret = group_title_send(m->conferences_object, conference_number, title, length);
 
     switch (ret) {
         case -1:
@@ -1708,21 +1708,21 @@ bool tox_conference_set_title(Tox *tox, uint32_t conference_number, const uint8_
 size_t tox_conference_get_chatlist_size(const Tox *tox)
 {
     const Messenger *m = tox->m;
-    return count_chatlist((Group_Chats *)m->conferences_object);
+    return count_chatlist(m->conferences_object);
 }
 
 void tox_conference_get_chatlist(const Tox *tox, uint32_t *chatlist)
 {
     const Messenger *m = tox->m;
     size_t list_size = tox_conference_get_chatlist_size(tox);
-    copy_chatlist((Group_Chats *)m->conferences_object, chatlist, list_size);
+    copy_chatlist(m->conferences_object, chatlist, list_size);
 }
 
 Tox_Conference_Type tox_conference_get_type(const Tox *tox, uint32_t conference_number,
         Tox_Err_Conference_Get_Type *error)
 {
     const Messenger *m = tox->m;
-    int ret = group_get_type((Group_Chats *)m->conferences_object, conference_number);
+    int ret = group_get_type(m->conferences_object, conference_number);
 
     if (ret == -1) {
         SET_ERROR_PARAMETER(error, TOX_ERR_CONFERENCE_GET_TYPE_CONFERENCE_NOT_FOUND);
@@ -1735,7 +1735,7 @@ Tox_Conference_Type tox_conference_get_type(const Tox *tox, uint32_t conference_
 
 bool tox_conference_get_id(const Tox *tox, uint32_t conference_number, uint8_t *id /* TOX_CONFERENCE_ID_SIZE bytes */)
 {
-    return conference_get_id((Group_Chats *)tox->m->conferences_object, conference_number, id);
+    return conference_get_id(tox->m->conferences_object, conference_number, id);
 }
 
 // TODO(iphydf): Delete in 0.3.0.
@@ -1751,7 +1751,7 @@ uint32_t tox_conference_by_id(const Tox *tox, const uint8_t *id, Tox_Err_Confere
         return UINT32_MAX;
     }
 
-    int32_t ret = conference_by_id((Group_Chats *)tox->m->conferences_object, id);
+    int32_t ret = conference_by_id(tox->m->conferences_object, id);
 
     if (ret == -1) {
         SET_ERROR_PARAMETER(error, TOX_ERR_CONFERENCE_BY_ID_NOT_FOUND);