diff --git a/libmc/_client.pyx b/libmc/_client.pyx
index b3bb1e1b..31226a07 100644
--- a/libmc/_client.pyx
+++ b/libmc/_client.pyx
@@ -1114,7 +1114,7 @@ cdef class PyClientShell(PyClientSettings):
         return self.last_error
 
     def update_servers(self, servers):
-        rv = self._update_servers(servers, False)
+        rv = _update_servers(servers, self._imp, False)
         if rv + len(servers) == 0:
             self.servers = servers
             return True