diff --git a/include/ucore/mbuf.h b/include/ucore/mbuf.h
index 1b92b81..9d6129e 100644
--- a/include/ucore/mbuf.h
+++ b/include/ucore/mbuf.h
@@ -151,7 +151,7 @@ static UC_INLINE uint32_t uc_mbuf_tailroom(struct MBuf *mbuf)
 /**
  * @return the length of the headroom in this mbuf
  */
-static inline uint32_t uc_mbuf_headroom(struct MBuf *mbuf)
+static UC_INLINE uint32_t uc_mbuf_headroom(struct MBuf *mbuf)
 {
     return (uint32_t)(mbuf->head - mbuf->bufstart);
 }
@@ -187,6 +187,15 @@ uint8_t *uc_mbuf_push(struct MBuf *mbuf, uint32_t size);
  **/
 uint8_t *uc_mbuf_pull(struct MBuf *mbuf, uint32_t size);
 
+/** Get a pointer to the data of the buffer
+ * 
+ * @return pointer to the start of the data (head)
+ */
+static UC_INLINE uint8_t *uc_mbuf_head(struct MBuf* mbuf)
+{
+    return mbuf->head;
+}
+
 #undef UC_INLINE
 
 #endif
diff --git a/test/test_mbuf.c b/test/test_mbuf.c
index dfe8577..badfab2 100644
--- a/test/test_mbuf.c
+++ b/test/test_mbuf.c
@@ -191,7 +191,7 @@ START_TEST (test_mbuf_copy)
     fail_if(copy == NULL);
     fail_if(uc_mbuf_len(copy) != 10);
     fail_if(uc_mbuf_headroom(copy) != 5);
-    fail_if(memcmp(mbuf->head, copy->head, 10) != 0);
+    fail_if(memcmp(uc_mbuf_head(mbuf), uc_mbuf_head(copy), 10) != 0);
 
     uc_mbuf_free(mbuf);
     uc_mbuf_free(copy);
@@ -211,7 +211,7 @@ START_TEST (test_mbuf_zero)
     strcpy((char*)data1, "123456789");
     uc_mbuf_zero(mbuf);
 
-    fail_if(memcmp(mbuf->head, "\0\0\0\0\0\0\0\0\0\0", 10) != 0);
+    fail_if(memcmp(uc_mbuf_head(mbuf), "\0\0\0\0\0\0\0\0\0\0", 10) != 0);
 
     uc_mbuf_free(mbuf);