diff --git a/include/linphone/api/c-chat-room.h b/include/linphone/api/c-chat-room.h
index 966f36896..a566a5829 100644
--- a/include/linphone/api/c-chat-room.h
+++ b/include/linphone/api/c-chat-room.h
@@ -273,6 +273,13 @@ LINPHONE_PUBLIC LinphoneChatRoomCbs * linphone_chat_room_get_callbacks (const Li
  */
 LINPHONE_PUBLIC LinphoneChatRoomState linphone_chat_room_get_state (const LinphoneChatRoom *cr);
 
+/**
+ * Return whether or not the chat room is read only.
+ * @param[in] cr LinphoneChatRoom object
+ * @return whether or not the chat room is read only
+ */
+LINPHONE_PUBLIC bool_t linphone_chat_room_is_read_only (const LinphoneChatRoom *cr);
+
 /**
  * Add a participant to a chat room. This may fail if this type of chat room does not handle participants.
  * Use linphone_chat_room_can_handle_participants() to know if this chat room handles participants.
diff --git a/src/c-wrapper/api/c-chat-room.cpp b/src/c-wrapper/api/c-chat-room.cpp
index 3fac4d189..667312688 100644
--- a/src/c-wrapper/api/c-chat-room.cpp
+++ b/src/c-wrapper/api/c-chat-room.cpp
@@ -244,6 +244,10 @@ LinphoneChatRoomState linphone_chat_room_get_state (const LinphoneChatRoom *cr)
 	return (LinphoneChatRoomState)L_GET_CPP_PTR_FROM_C_OBJECT(cr)->getState();
 }
 
+bool_t linphone_chat_room_is_read_only (const LinphoneChatRoom *cr) {
+	return (bool_t)L_GET_CPP_PTR_FROM_C_OBJECT(cr)->isReadOnly();
+}
+
 void linphone_chat_room_add_participant (LinphoneChatRoom *cr, const LinphoneAddress *addr) {
 	L_GET_CPP_PTR_FROM_C_OBJECT(cr)->addParticipant(
 		LinphonePrivate::IdentityAddress(*L_GET_CPP_PTR_FROM_C_OBJECT(addr)), nullptr, false
diff --git a/src/chat/chat-room/client-group-chat-room.cpp b/src/chat/chat-room/client-group-chat-room.cpp
index ffbca8196..4ae71e314 100644
--- a/src/chat/chat-room/client-group-chat-room.cpp
+++ b/src/chat/chat-room/client-group-chat-room.cpp
@@ -132,7 +132,7 @@ ClientGroupChatRoom::CapabilitiesMask ClientGroupChatRoom::getCapabilities () co
 }
 
 bool ClientGroupChatRoom::isReadOnly () const {
-	return getState() == State::Created;
+	return getState() != State::Created;
 }
 
 bool ClientGroupChatRoom::canHandleParticipants () const {