diff --git a/legendary/cli.py b/legendary/cli.py
index 759c9e5..57fd6d4 100644
--- a/legendary/cli.py
+++ b/legendary/cli.py
@@ -2240,7 +2240,8 @@ class LegendaryCLI:
                         return
                     bottle_name = clean_filename(new_name).strip()
 
-                dlm, ares, path = self.core.prepare_bottle_download(bottle_name, install_candidate['manifest'])
+                dlm, ares, path = self.core.prepare_bottle_download(bottle_name, install_candidate['manifest'],
+                                                                    base_url=install_candidate.get('base_url'))
 
                 logger.info(f'Bottle install directory: {path}')
                 logger.info(f'Bottle size: {ares.install_size / 1024 / 1024:.2f} MiB')
diff --git a/legendary/core.py b/legendary/core.py
index dd445ca..45764ee 100644
--- a/legendary/core.py
+++ b/legendary/core.py
@@ -1839,11 +1839,13 @@ class LegendaryCore:
         lgd_version_data = self.lgd.get_cached_version()
         return lgd_version_data.get('data', {}).get('cx_bottles', [])
 
-    def prepare_bottle_download(self, bottle_name, manifest_url):
+    def prepare_bottle_download(self, bottle_name, manifest_url, base_url=None):
         r = self.egs.unauth_session.get(manifest_url)
         r.raise_for_status()
         manifest = self.load_manifest(r.content)
-        base_url = manifest_url.rpartition('/')[0]
+
+        if not base_url:
+            base_url = manifest_url.rpartition('/')[0]
 
         path = mac_get_bottle_path(bottle_name)
         if os.path.exists(path):