diff --git a/src/core/pbuf.c b/src/core/pbuf.c
index e679eaae..d1b80fff 100644
--- a/src/core/pbuf.c
+++ b/src/core/pbuf.c
@@ -204,9 +204,9 @@ pbuf_alloc(pbuf_layer l, u16_t size, pbuf_flag flag)
     /* FALLTHROUGH */
   case PBUF_IP:
     offset += PBUF_IP_HLEN;
-    offset += PBUF_LINK_HLEN;
     /* FALLTHROUGH */
   case PBUF_LINK:
+    offset += PBUF_LINK_HLEN;
     break;
   case PBUF_RAW:
     break;
@@ -661,4 +661,6 @@ pbuf_unref(struct pbuf *f)
     q = q->next;
   }
   return f;
-}
\ No newline at end of file
+}
+
+