diff --git a/discord/http.py b/discord/http.py
index 3a7dfc283..38ff56ed3 100644
--- a/discord/http.py
+++ b/discord/http.py
@@ -58,7 +58,7 @@ class Route:
         self.method = method
         url = self.BASE + self.path
         if parameters:
-            self.url = url.format(**{k: _uriquote(v) if isinstance(v, str) else v for k, v in parameters.items()})
+            self.url = url.format_map({k: _uriquote(v) if isinstance(v, str) else v for k, v in parameters.items()})
         else:
             self.url = url