diff --git a/lib/roken/roken-common.h b/lib/roken/roken-common.h
index a897a67aa..099f11314 100644
--- a/lib/roken/roken-common.h
+++ b/lib/roken/roken-common.h
@@ -191,13 +191,14 @@
 /* flags for getaddrinfo() */
 
 #ifndef AI_PASSIVE
-
 #define AI_PASSIVE	0x01
 #define AI_CANONNAME	0x02
-#define AI_NUMERICHOST	0x04
-
 #endif /* AI_PASSIVE */
 
+#ifndef AI_NUMERICHOST
+#define AI_NUMERICHOST	0x04
+#endif
+
 /* flags for getnameinfo() */
 
 #ifndef NI_DGRAM