diff --git a/components/lwip/api/lwip_debug.c b/components/lwip/api/lwip_debug.c
index 6a8f91c40f..1e5fed40d3 100644
--- a/components/lwip/api/lwip_debug.c
+++ b/components/lwip/api/lwip_debug.c
@@ -1,6 +1,18 @@
-#ifndef _LWIP_DEBUG_
-#define _LWIP_DEBUG_
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
 
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "lwip/lwip_debug.h"
 #include "lwip/api.h"
 #include "lwip/netbuf.h"
 #include "lwip/tcp.h"
@@ -112,4 +124,3 @@ void dbg_lwip_udp_rxtx_show(void)
     printf("TBC\n");
 }
 
-#endif
diff --git a/components/lwip/include/lwip/lwip/lwip_debug.h b/components/lwip/include/lwip/lwip/lwip_debug.h
new file mode 100644
index 0000000000..abfcd2c1c3
--- /dev/null
+++ b/components/lwip/include/lwip/lwip/lwip_debug.h
@@ -0,0 +1,24 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+#ifndef _LWIP_DEBUG_H
+#define _LWIP_DEBUG_H
+
+void dbg_lwip_tcp_pcb_show(void);
+void dbg_lwip_udp_pcb_show(void);
+void dbg_lwip_tcp_rxtx_show(void);
+void dbg_lwip_udp_rxtx_show(void);
+
+#endif