diff --git a/include/epoll.h b/include/epoll.h
index ce44302..a49997e 100644
--- a/include/epoll.h
+++ b/include/epoll.h
@@ -7,20 +7,33 @@
 
 #include <stdint.h>
 
-#define EPOLLIN 0x001
-#define EPOLLPRI 0x002
-#define EPOLLOUT 0x004
-#define EPOLLERR 0x008
-#define EPOLLHUP 0x010
-#define EPOLLRDNORM 0x040
-#define EPOLLRDBAND 0x080
-#define EPOLLWRNORM 0x100
-#define EPOLLMSG 0x400
-#define EPOLLWRBAND 0x200
-#define EPOLLRDHUP 0x2000
+enum EPOLL_EVENTS {
+  EPOLLIN = 1 << 0,
+  EPOLLPRI = 1 << 1,
+  EPOLLOUT = 1 << 2,
+  EPOLLERR = 1 << 3,
+  EPOLLHUP = 1 << 4,
+  EPOLLRDNORM = 1 << 6,
+  EPOLLRDBAND = 1 << 7,
+  EPOLLWRNORM = 1 << 8,
+  EPOLLWRBAND = 1 << 9,
+  EPOLLMSG = 1 << 10,
+  EPOLLRDHUP = 1 << 13,
+  EPOLLONESHOT = 1 << 31
+};
 
-/* #define EPOLLET (1 << 30) Not supported */
-#define EPOLLONESHOT (1 << 31)
+#define EPOLLIN EPOLLIN
+#define EPOLLPRI EPOLLPRI
+#define EPOLLOUT EPOLLOUT
+#define EPOLLERR EPOLLERR
+#define EPOLLHUP EPOLLHUP
+#define EPOLLRDNORM EPOLLRDNORM
+#define EPOLLRDBAND EPOLLRDBAND
+#define EPOLLWRNORM EPOLLWRNORM
+#define EPOLLWRBAND EPOLLWRBAND
+#define EPOLLMSG EPOLLMSG
+#define EPOLLRDHUP EPOLLRDHUP
+#define EPOLLONESHOT EPOLLONESHOT
 
 #define EPOLL_CTL_ADD 1
 #define EPOLL_CTL_MOD 2