diff --git a/pkg/thread.py b/pkg/thread.py
index 3a9b89b..01d3d2c 100644
--- a/pkg/thread.py
+++ b/pkg/thread.py
@@ -26,7 +26,7 @@ def download_tile(task):
                 tqdm.write(f'{output_path} is not a PNG, deleting and retrying...')
             else:
                 return row, col, 'exist'
-        tile_url = f"{base_url}/{row}/{col}".replace('//', '/')
+        tile_url = f"{base_url}/{row}/{col}".replace('//', '/').replace(':/', '://')
         response = requests.get(tile_url, headers=r_headers, proxies=PROXIES if use_proxy else None, timeout=60)
         if response.status_code == 200:
             if not response.headers.get('Content-Type') == 'image/png':