diff --git a/src/RoomDirectoryModel.cpp b/src/RoomDirectoryModel.cpp

index 2a06e4d4..b206bf9e 100644
--- a/src/RoomDirectoryModel.cpp
+++ b/src/RoomDirectoryModel.cpp
@@ -4,6 +4,7 @@
 

 #include "RoomDirectoryModel.h"

 #include "ChatPage.h"

+#include "Cache.h"

 

 #include <algorithm>

 

@@ -68,6 +69,16 @@ RoomDirectoryModel::setSearchTerm(const QString &f)
         resetDisplayedData();

 }

 

+

+bool

+RoomDirectoryModel::canJoinRoom(const QByteArray &room)

+{

+	const auto &cache = cache::roomInfo();

+	const QString room_id (room);

+	const bool validRoom = !room_id.isNull() && !room_id.isEmpty();

+	return validRoom && !cache.contains(room_id);

+}

+

 std::vector<std::string>

 RoomDirectoryModel::getViasForRoom(const std::vector<std::string> &aliases)

 {

@@ -174,4 +185,4 @@ RoomDirectoryModel::displayRooms(std::vector<mtx::responses::PublicRoomsChunk> f
         }

 

         prevBatch_ = std::exchange(nextBatch_, next_batch);

-}
\ No newline at end of file
+}

diff --git a/src/RoomDirectoryModel.h b/src/RoomDirectoryModel.h

index ff571d93..7099ff00 100644
--- a/src/RoomDirectoryModel.h
+++ b/src/RoomDirectoryModel.h
@@ -56,6 +56,7 @@ public:
         }

         void fetchMore(const QModelIndex &) override;

 

+	Q_INVOKABLE bool canJoinRoom(const QByteArray &room);

         Q_INVOKABLE void joinRoom(const int &index = -1);

 

 signals:

@@ -84,4 +85,4 @@ private:
 

         std::vector<std::string> getViasForRoom(const std::vector<std::string> &room);

         void resetDisplayedData();

-};
\ No newline at end of file
+};