diff --git a/lnbits/exceptions.py b/lnbits/exceptions.py
index 4e3eef296..3eab27593 100644
--- a/lnbits/exceptions.py
+++ b/lnbits/exceptions.py
@@ -151,7 +151,7 @@ def register_exception_handlers(app: FastAPI):
         status_code = HTTPStatus.NOT_FOUND
         message: str = "Page not found."
 
-        if path in settings.lnbits_all_extensions_ids:
+        if settings.is_ready_to_install_extension_id(path):
             status_code = HTTPStatus.FORBIDDEN
             message = f"Extension '{path}' not installed. Ask the admin to install it."
 
diff --git a/lnbits/settings.py b/lnbits/settings.py
index f9b9a3330..7294555fd 100644
--- a/lnbits/settings.py
+++ b/lnbits/settings.py
@@ -1026,6 +1026,12 @@ class Settings(EditableSettings, ReadOnlySettings, TransientSettings, BaseSettin
     def is_installed_extension_id(self, ext_id: str) -> bool:
         return ext_id in self.lnbits_installed_extensions_ids
 
+    def is_ready_to_install_extension_id(self, ext_id: str) -> bool:
+        return (
+            ext_id not in self.lnbits_installed_extensions_ids
+            and ext_id in self.lnbits_all_extensions_ids
+        )
+
 
 class SuperSettings(EditableSettings):
     super_user: str