diff --git a/qtribu/gui/dck_qchat.py b/qtribu/gui/dck_qchat.py
index 15541f69..1b735e98 100644
--- a/qtribu/gui/dck_qchat.py
+++ b/qtribu/gui/dck_qchat.py
@@ -49,6 +49,7 @@
     QChatNbUsersMessage,
     QChatNewcomerMessage,
     QChatTextMessage,
+    QChatUncompliantMessage,
 )
 from qtribu.logic.qchat_websocket import QChatWebsocket
 from qtribu.tasks.dizzy import DizzyTask
@@ -143,6 +144,9 @@ def __init__(
         # initialize websocket client
         self.qchat_ws = QChatWebsocket()
         self.qchat_ws.error.connect(self.on_ws_error)
+        self.qchat_ws.uncompliant_message_received.connect(
+            self.on_uncompliant_message_received
+        )
         self.qchat_ws.text_message_received.connect(self.on_text_message_received)
         self.qchat_ws.image_message_received.connect(self.on_image_message_received)
         self.qchat_ws.nb_users_message_received.connect(
@@ -423,6 +427,17 @@ def on_ws_error(self, error_code: int) -> None:
 
     # region websocket message received
 
+    def on_uncompliant_message_received(self, message: QChatUncompliantMessage) -> None:
+        self.log(
+            message=self.tr("Uncompliant message: {reason}").format(
+                reason=message.reason
+            ),
+            application=self.tr("QChat"),
+            log_level=Qgis.Critical,
+            push=PlgOptionsManager().get_plg_settings().notify_push_info,
+            duration=PlgOptionsManager().get_plg_settings().notify_push_duration,
+        )
+
     def on_text_message_received(self, message: QChatTextMessage) -> None:
         """
         Launched when a text message is received from the websocket
diff --git a/qtribu/logic/qchat_messages.py b/qtribu/logic/qchat_messages.py
index db2c5f7e..14642be2 100644
--- a/qtribu/logic/qchat_messages.py
+++ b/qtribu/logic/qchat_messages.py
@@ -7,6 +7,11 @@ class QChatMessage:
     type: str
 
 
+@dataclass(init=True, frozen=True)
+class QChatUncompliantMessage(QChatMessage):
+    reason: str
+
+
 @dataclass(init=True, frozen=True)
 class QChatTextMessage(QChatMessage):
     author: str
diff --git a/qtribu/logic/qchat_websocket.py b/qtribu/logic/qchat_websocket.py
index 620a4a06..ba3928e1 100644
--- a/qtribu/logic/qchat_websocket.py
+++ b/qtribu/logic/qchat_websocket.py
@@ -14,6 +14,7 @@
     QChatNbUsersMessage,
     QChatNewcomerMessage,
     QChatTextMessage,
+    QChatUncompliantMessage,
 )
 from qtribu.toolbelt import PlgLogger
 
@@ -49,6 +50,7 @@ def __init__(self):
     error = pyqtSignal(int)
 
     # QChat message signals
+    uncompliant_message_received = pyqtSignal(QChatUncompliantMessage)
     text_message_received = pyqtSignal(QChatTextMessage)
     image_message_received = pyqtSignal(QChatImageMessage)
     nb_users_message_received = pyqtSignal(QChatNbUsersMessage)
@@ -96,7 +98,9 @@ def on_message_received(self, text: str) -> None:
         """
         message = json.loads(text)
         msg_type = message["type"]
-        if msg_type == "text":
+        if msg_type == "uncompliant":
+            self.uncompliant_message_received.emit(QChatUncompliantMessage(**message))
+        elif msg_type == "text":
             self.text_message_received.emit(QChatTextMessage(**message))
         elif msg_type == "image":
             self.image_message_received.emit(QChatImageMessage(**message))