diff --git a/scripts/http_host/nginx_sync/nginx_sync.py b/scripts/http_host/nginx_sync/nginx_sync.py
index 95acd70..6be064a 100755
--- a/scripts/http_host/nginx_sync/nginx_sync.py
+++ b/scripts/http_host/nginx_sync/nginx_sync.py
@@ -60,7 +60,7 @@ def cli():
         )
 
         # TODO raise expires if everything is stable
-        version_str = rf"""
+        version_str = f"""
             location /{area}/{version} {{    # no trailing hash
                 alias {tilejson_path};       # no trailing hash
                 default_type application/json;