diff --git a/inet_ntop.c b/inet_ntop.c
index eefc34a..9420f6c 100644
--- a/inet_ntop.c
+++ b/inet_ntop.c
@@ -195,11 +195,14 @@ inet_ntop6(const unsigned char *src, char *dst, size_t size)
   strcpy(dst, tmp);
   return (dst);
 }
+
 #else /* HAVE_INET_NTOP */
 
-const char *ares_inet_ntop(int af, const void *src, char *dst, socklen_t size)
+const char *
+ares_inet_ntop(int af, const void *src, char *dst, ares_socklen_t size)
 {
   /* just relay this to the underlying function */
   return inet_ntop(af, src, dst, size);
 }
+
 #endif /* HAVE_INET_NTOP */