diff --git a/project/mahjong/ai/tests/tests_ai.py b/project/mahjong/ai/tests/tests_ai.py
index 9b275535..3161c8c6 100644
--- a/project/mahjong/ai/tests/tests_ai.py
+++ b/project/mahjong/ai/tests/tests_ai.py
@@ -243,8 +243,18 @@ def test_upgrade_opened_pon_to_kan(self):
 
         player.add_called_meld(self._make_meld(Meld.PON, self._string_to_136_array(man='444')))
 
+        self.assertEqual(len(player.melds), 1)
+        self.assertEqual(len(player.tiles), 14)
         self.assertEqual(player.can_call_kan(tile, False), Meld.CHANKAN)
 
+        player.discard_tile()
+        player.draw_tile(tile)
+        player.add_called_meld(self._make_meld(Meld.CHANKAN, self._string_to_136_array(man='4444')))
+
+        self.assertEqual(len(player.melds), 1)
+        self.assertEqual(player.melds[0].type, Meld.CHANKAN)
+        self.assertEqual(len(player.tiles), 13)
+
     def test_call_closed_kan(self):
         table = Table()
         player = table.player
diff --git a/project/mahjong/player.py b/project/mahjong/player.py
index 1dcf3587..16654954 100644
--- a/project/mahjong/player.py
+++ b/project/mahjong/player.py
@@ -62,7 +62,9 @@ def erase_state(self):
     def add_called_meld(self, meld: Meld):
         # we already added chankan as a pon set
         if meld.type == Meld.CHANKAN:
-            return
+            tile_34 = meld.tiles[0] // 4
+            pon_set = [x for x in self.melds if x.type == Meld.PON and (x.tiles[0] // 4) == tile_34]
+            self.melds.remove(pon_set[0])
 
         self.melds.append(meld)
 
@@ -210,7 +212,7 @@ def enemy_called_riichi(self):
 
     def add_called_meld(self, meld: Meld):
         # we had to remove tile from the hand for closed kan set
-        if (meld.type == Meld.KAN or meld.type == Meld.CHANKAN) and not meld.opened:
+        if (meld.type == Meld.KAN and not meld.opened) or meld.type == Meld.CHANKAN:
             self.tiles.remove(meld.called_tile)
 
         super().add_called_meld(meld)
diff --git a/project/tenhou/client.py b/project/tenhou/client.py
index 93103575..9273e219 100644
--- a/project/tenhou/client.py
+++ b/project/tenhou/client.py
@@ -271,7 +271,7 @@ def start_game(self):
                             else:
                                 meld_type = 4
                             self._send_message('<N type="{}" hai="{}" />'.format(meld_type, drawn_tile))
-                            logger.info('We called a kan set!')
+                            logger.info('We called a closed kan\chankan set!')
                             continue
 
                         discarded_tile = self.player.discard_tile()
@@ -374,7 +374,7 @@ def start_game(self):
                         if 't="3"' in message:
                             if self.player.can_call_kan(tile, True):
                                 self._send_message('<N type="2" />')
-                                logger.info('We called a kan set!')
+                                logger.info('We called an open kan set!')
                                 continue
 
                         # chi or pon