diff --git a/src/core/pbuf.c b/src/core/pbuf.c
index 3e3810e4..c4932c26 100644
--- a/src/core/pbuf.c
+++ b/src/core/pbuf.c
@@ -269,7 +269,7 @@ pbuf_alloc(pbuf_layer l, u16_t length, pbuf_flag flag)
         pbuf_free(p);
         return NULL;
       }
-      //q->next = NULL;
+      /*q->next = NULL;*/
       /* make previous pbuf point to this pbuf */
       r->next = q;
       /* set length of this pbuf */
diff --git a/src/core/udp.c b/src/core/udp.c
index 38c8e9d5..2a668c66 100644
--- a/src/core/udp.c
+++ b/src/core/udp.c
@@ -57,9 +57,6 @@
 #include "arch/perf.h"
 #include "lwip/snmp.h"
 
-//#undef DEBUGF
-//#define DEBUGF(x,y) { page_printf("\f"); page_printf y; };
-
 /* The list of UDP PCBs */
 #if LWIP_UDP
 /* was static, but we may want to access this from a socket layer */