diff --git a/net/bootp.h b/net/bootp.h
index 320cc3bd3..c2f011c8c 100644
--- a/net/bootp.h
+++ b/net/bootp.h
@@ -60,7 +60,7 @@ extern ulong	BootpID;		/* ID of cur BOOTP request		*/
 extern char	BootFile[128];		/* Boot file name			*/
 extern int	BootpTry;
 #ifdef CONFIG_BOOTP_RANDOM_DELAY
-ulong		seed1, seed2;		/* seed for random BOOTP delay		*/
+extern ulong	seed1, seed2;		/* seed for random BOOTP delay		*/
 #endif