diff --git a/src/gui_qt/lib/utils.py b/src/gui_qt/lib/utils.py
index fc90868..768b848 100644
--- a/src/gui_qt/lib/utils.py
+++ b/src/gui_qt/lib/utils.py
@@ -223,7 +223,7 @@ class Updater:
     @staticmethod
     @lru_cache(3)
     def get_zsync():
-        url_zsync = self.zsync_url
+        url_zsync = f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
         m_time_zsync = None
         checksum_zsync = None
         zsync_file = None