diff --git a/src/core/pbuf.c b/src/core/pbuf.c
index 0c42b9e5..6dc63228 100644
--- a/src/core/pbuf.c
+++ b/src/core/pbuf.c
@@ -77,18 +77,6 @@
    aligned there. Therefore, PBUF_POOL_BUFSIZE_ALIGNED can be used here. */
 #define PBUF_POOL_BUFSIZE_ALIGNED LWIP_MEM_ALIGN_SIZE(PBUF_POOL_BUFSIZE)
 
-/**
- * Initializes the pbuf module.
- *
- * Do some checks an initialize the pbuf pool.
- *
- */
-void
-pbuf_init(void)
-{
-  /* nothing to do here */
-}
-
 /**
  * Allocates a pbuf of the given type (possibly a chain for PBUF_POOL type).
  *
diff --git a/src/include/lwip/pbuf.h b/src/include/lwip/pbuf.h
index 578a5344..b159722a 100644
--- a/src/include/lwip/pbuf.h
+++ b/src/include/lwip/pbuf.h
@@ -98,7 +98,8 @@ struct pbuf {
   
 };
 
-void pbuf_init(void);
+/* Initializes the pbuf module. This call is empty for now, but may not be in future. */
+#define pbuf_init() do { } while (0)
 
 struct pbuf *pbuf_alloc(pbuf_layer l, u16_t size, pbuf_flag flag);
 void pbuf_realloc(struct pbuf *p, u16_t size);