diff --git a/src/conf.py b/src/conf.py
index 514767236..5b83f2d68 100644
--- a/src/conf.py
+++ b/src/conf.py
@@ -258,7 +258,7 @@ class Servers(registry.SpaceSeparatedListOfStrings):
         (server, port) = s.rsplit(':', 1)
 
         # support for `[ipv6]:port` format
-        if server.startwith("[") and server.endswith("]"):
+        if server.startswith("[") and server.endswith("]"):
             server = server[1:-1]
 
         port = int(port)