diff --git a/mbuni/misc-patches/mbuni-kannel-patch-full b/mbuni/misc-patches/mbuni-kannel-patch-full
index 5dc75d7..9b9fea1 100644
--- a/mbuni/misc-patches/mbuni-kannel-patch-full
+++ b/mbuni/misc-patches/mbuni-kannel-patch-full
@@ -516,7 +516,7 @@ diff -Naur gateway-1.4.0/gw/ota_prov.c gateway-1.4.0-patched/gw/ota_prov.c
 +	 warning(0, "No SSL Support, '%s' not supported!", octstr_get_cstr(mime_type));
 +#endif
 +	 mac = octstr_create_from_data(p, mac_len);
-+	 octstr_binary_to_hex(mac,0);
++	 octstr_binary_to_hex(mac,1);
 +	 
 +	 octstr_append(hdr,mac);
 +	 octstr_append_from_hex(hdr, "00");