diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index ac33af6b..87147982 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -37,7 +37,6 @@
 #include "viewmanager/viewmanager.h"
 
 #include <array>
-#include <extensions/extensions.h>
 #include <extensions/multiplayer.h>
 #include <miniwin/miniwindevice.h>
 #include <type_traits>
@@ -1297,10 +1296,12 @@ inline bool IsleApp::Tick()
 		return true;
 	}
 
-	if (Extension<MultiplayerExt>::Call(CheckRejected).value_or(FALSE)) {
+#ifdef EXTENSIONS
+	if (Extensions::IsMultiplayerRejected()) {
 		g_closed = TRUE;
 		return true;
 	}
+#endif
 
 	if (!TickleManager()) {
 		return true;
diff --git a/extensions/include/extensions/multiplayer.h b/extensions/include/extensions/multiplayer.h
index 21cd94d0..840f8359 100644
--- a/extensions/include/extensions/multiplayer.h
+++ b/extensions/include/extensions/multiplayer.h
@@ -45,6 +45,8 @@ class MultiplayerExt {
 };
 
 #ifdef EXTENSIONS
+LEGO1_EXPORT bool IsMultiplayerRejected();
+
 constexpr auto HandleWorldEnable = &MultiplayerExt::HandleWorldEnable;
 constexpr auto HandleEntityNotify = &MultiplayerExt::HandleEntityNotify;
 constexpr auto CheckRejected = &MultiplayerExt::CheckRejected;
diff --git a/extensions/src/multiplayer.cpp b/extensions/src/multiplayer.cpp
index 285ce04b..05cf9a79 100644
--- a/extensions/src/multiplayer.cpp
+++ b/extensions/src/multiplayer.cpp
@@ -1,5 +1,6 @@
 #include "extensions/multiplayer.h"
 
+#include "extensions/extensions.h"
 #include "extensions/multiplayer/networkmanager.h"
 #include "extensions/multiplayer/networktransport.h"
 #include "extensions/multiplayer/protocol.h"
@@ -118,3 +119,8 @@ Multiplayer::NetworkManager* MultiplayerExt::GetNetworkManager()
 {
 	return s_networkManager;
 }
+
+bool Extensions::IsMultiplayerRejected()
+{
+	return Extension<MultiplayerExt>::Call(CheckRejected).value_or(FALSE);
+}