--- print-zephyr.c
+++ print-zephyr.c
@@ -134,7 +134,7 @@
 void
 zephyr_print(const u_char *cp, int length)
 {
-    struct z_packet z;
+    struct z_packet z = {};
     char *parse = (char *) cp;
     int parselen = length;
     char *s;