diff --git a/lib/roken/roken.h.in b/lib/roken/roken.h.in
index b849aed05..e9db01a24 100644
--- a/lib/roken/roken.h.in
+++ b/lib/roken/roken.h.in
@@ -441,7 +441,7 @@ typedef unsigned short sa_family_t;
 #if HAVE_STRUCT_SOCKADDR_SA_LEN
 
 struct sockaddr_storage {
-    u_int8_t		__ss_len;
+    unsigned char	__ss_len;
     sa_family_t		__ss_family;
     char		pad[
 #ifdef HAVE_IPV6
@@ -449,7 +449,7 @@ struct sockaddr_storage {
 #else
 			    sizeof(struct sockaddr_in)
 #endif
-			   - sizeof(u_int8_t) - sizeof(sa_family_t)];
+			   - sizeof(unsigned char) - sizeof(sa_family_t)];
 };
 
 #else