diff --git a/src/include/lwip/pbuf.h b/src/include/lwip/pbuf.h
index ce6da5b3..eb3be89c 100644
--- a/src/include/lwip/pbuf.h
+++ b/src/include/lwip/pbuf.h
@@ -103,8 +103,9 @@ void pbuf_ref_chain(struct pbuf *p);
 u8_t pbuf_free(struct pbuf *p);
 u8_t pbuf_clen(struct pbuf *p);  
 void pbuf_chain(struct pbuf *h, struct pbuf *t);
-struct pbuf *pbuf_dechain(struct pbuf *p);
 struct pbuf *pbuf_take(struct pbuf *f);
-
+#if 0 /* see remark in code */
+struct pbuf *pbuf_dechain(struct pbuf *p);
+#endif
 
 #endif /* __LWIP_PBUF_H__ */