diff --git a/src/include/ipv4/lwip/ip_addr.h b/src/include/ipv4/lwip/ip_addr.h
index c8219319..ee2ec2d9 100644
--- a/src/include/ipv4/lwip/ip_addr.h
+++ b/src/include/ipv4/lwip/ip_addr.h
@@ -118,11 +118,11 @@ extern const struct ip_addr ip_addr_broadcast;
 #define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000))
 
 
-#define ip_addr_debug_print(ipaddr) LWIP_DEBUGF(LWIP_DEBUG, ("%d.%d.%d.%d", \
-        (unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff, \
-        (unsigned int)(ntohl((ipaddr)->addr) >> 16) & 0xff, \
-        (unsigned int)(ntohl((ipaddr)->addr) >> 8) & 0xff, \
-        (unsigned int)ntohl((ipaddr)->addr) & 0xff))
+#define ip_addr_debug_print(debug, ipaddr) LWIP_DEBUGF(debug, ("%u.%u.%u.%u", \
+        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff:0, \
+        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 16) & 0xff:0, \
+        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 8) & 0xff:0, \
+        ipaddr?(unsigned int)ntohl((ipaddr)->addr) & 0xff:0U))
 
 /* cast to unsigned int, as it is used as argument to printf functions
  * which expect integer arguments */