--- src/netsniff-ng.c.orig	2009-12-31 11:18:59.000000000 +0100
+++ src/netsniff-ng.c	2009-12-31 11:20:29.000000000 +0100
@@ -436,7 +436,7 @@
 		exit(EXIT_FAILURE);
 	}
 
-	memset(bpf, 0, sizeof(**bpf));
+	memset(*bpf, 0, sizeof(**bpf));
 
 	(*rb) = (ring_buff_t *) malloc(sizeof(**rb));
 	if ((*rb) == NULL) {