diff --git a/plugins/DigitalLibrary/src/DigitalFactoryApiClient.py b/plugins/DigitalLibrary/src/DigitalFactoryApiClient.py
index 91f1daf2f7..460438e365 100644
--- a/plugins/DigitalLibrary/src/DigitalFactoryApiClient.py
+++ b/plugins/DigitalLibrary/src/DigitalFactoryApiClient.py
@@ -92,7 +92,7 @@ class DigitalFactoryApiClient:
                 if isinstance(response, DigitalFactoryProjectResponse):  # The user has only one private project
                     callback(True)
                 elif isinstance(response, list) and all(isinstance(r, DigitalFactoryProjectResponse) for r in response):
-                    callback(len(response) < self._library_max_private_projects)
+                    callback(len(response) < cast(int, self._library_max_private_projects))
                 else:
                     Logger.warning(f"Digital Factory: Incorrect response type received when requesting private projects: {str(response)}")
                     callback(False)