diff --git a/src/include/lwip/event.h b/src/include/lwip/event.h
deleted file mode 100644
index 677cafc..0000000
--- a/src/include/lwip/event.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef __LWIP_EVENT_H__
-#define __LWIP_EVENT_H__
-
-#include "lwip/opt.h"
-
-#if LWIP_EVENT_API
-
-#include "lwip/pbuf.h"
-
-enum lwip_event {
-  LWIP_EVENT_ACCEPT,
-  LWIP_EVENT_SENT,
-  LWIP_EVENT_RECV,
-  LWIP_EVENT_CONNECTED,
-  LWIP_EVENT_POLL,
-  LWIP_EVENT_ERR
-};
-
-struct tcp_pcb;
-
-err_t lwip_tcp_event(void *arg, struct tcp_pcb *pcb,
-		     enum lwip_event,
-		     struct pbuf *p,
-		     u16_t size,
-		     err_t err);
-
-#endif /* LWIP_EVENT_API */
-
-#endif /* __LWIP_EVENT_H__ */