diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index cadf609..56e30d1 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -575,7 +575,7 @@
    through len_ret. */
 
 static int
-getsockaddrlen(PySocketSockObject *s, unsigned int *len_ret)
+getsockaddrlen(PySocketSockObject *s, socklen_t *len_ret)
 {
 	switch (s->sock_family) {