diff --git a/lib/des/rnd_keys.c b/lib/des/rnd_keys.c
index fae1793e2..59c7c8945 100644
--- a/lib/des/rnd_keys.c
+++ b/lib/des/rnd_keys.c
@@ -89,7 +89,6 @@ des_init_random_number_generator(des_cblock *seed)
   struct timeval now;
   static long uniq[2];
   des_cblock new_key;
-  long gethostid(void);
 
   gettimeofday(&now, (struct timezone *)0);
   if (!uniq[0])