diff --git a/contrib/ipfilter/arc4random.c b/contrib/ipfilter/arc4random.c
index 04b0797c78f8..499428702a81 100644
--- a/contrib/ipfilter/arc4random.c
+++ b/contrib/ipfilter/arc4random.c
@@ -109,9 +109,9 @@ arc4_randomstir (void)
 	/*
 	 * Throw away the first N words of output, as suggested in the
 	 * paper "Weaknesses in the Key Scheduling Algorithm of RC4"
-	 * by Fluher, Mantin, and Shamir.  (N = 256 in our case.)
+	 * by Fluher, Mantin, and Shamir.  (N = 768 in our case.)
 	 */
-	for (n = 0; n < 256*4; n++)
+	for (n = 0; n < 768*4; n++)
 		arc4_randbyte();
 	MUTEX_EXIT(&arc4_mtx);
 }