diff --git a/src/port.c b/src/port.c
index 8ea17bc..acbbb2f 100644
--- a/src/port.c
+++ b/src/port.c
@@ -2,12 +2,12 @@
 #include <malloc.h>
 #include <stdlib.h>
 
-#include "epoll-socket.h"
 #include "epoll.h"
 #include "error.h"
 #include "poll-group.h"
 #include "port.h"
 #include "queue.h"
+#include "sock.h"
 #include "tree.h"
 #include "util.h"
 #include "win.h"
diff --git a/src/port.h b/src/port.h
index ceb759d..ddbbf50 100644
--- a/src/port.h
+++ b/src/port.h
@@ -2,13 +2,13 @@
 #define EPOLL_PORT_DATA_H_
 
 #include "afd.h"
-#include "epoll-socket.h"
 #include "epoll.h"
 #include "internal.h"
 #include "poll-group.h"
 #include "queue.h"
 #include "rb.h"
 #include "reflock-tree.h"
+#include "sock.h"
 #include "tree.h"
 #include "util.h"
 #include "win.h"
diff --git a/src/epoll-socket.c b/src/sock.c
similarity index 99%
rename from src/epoll-socket.c
rename to src/sock.c
index 516c4ab..c6dba38 100644
--- a/src/epoll-socket.c
+++ b/src/sock.c
@@ -4,11 +4,11 @@
 #include <stdint.h>
 
 #include "afd.h"
-#include "epoll-socket.h"
 #include "epoll.h"
 #include "error.h"
 #include "poll-group.h"
 #include "port.h"
+#include "sock.h"
 
 #define _EP_EVENT_MASK 0xffff
 
diff --git a/src/epoll-socket.h b/src/sock.h
similarity index 93%
rename from src/epoll-socket.h
rename to src/sock.h
index ac86f57..514a1e4 100644
--- a/src/epoll-socket.h
+++ b/src/sock.h
@@ -1,5 +1,5 @@
-#ifndef EPOLL_SOCK_DATA_H_
-#define EPOLL_SOCK_DATA_H_
+#ifndef EPOLL_SOCK_H_
+#define EPOLL_SOCK_H_
 
 #include <stdint.h>
 
@@ -36,4 +36,4 @@ EPOLL_INTERNAL int ep_sock_feed_event(ep_port_t* port_info,
                                       ep_sock_t* sock_info,
                                       struct epoll_event* ev);
 
-#endif /* EPOLL_SOCK_DATA_H_ */
+#endif /* EPOLL_SOCK_H_ */