diff --git a/include/wepoll.h b/include/wepoll.h
index 210fcb7..dcd5ac4 100644
--- a/include/wepoll.h
+++ b/include/wepoll.h
@@ -24,18 +24,18 @@ enum EPOLL_EVENTS {
   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 EPOLLIN      ((uint32_t) EPOLLIN)
+#define EPOLLPRI     ((uint32_t) EPOLLPRI)
+#define EPOLLOUT     ((uint32_t) EPOLLOUT)
+#define EPOLLERR     ((uint32_t) EPOLLERR)
+#define EPOLLHUP     ((uint32_t) EPOLLHUP)
+#define EPOLLRDNORM  ((uint32_t) EPOLLRDNORM)
+#define EPOLLRDBAND  ((uint32_t) EPOLLRDBAND)
+#define EPOLLWRNORM  ((uint32_t) EPOLLWRNORM)
+#define EPOLLWRBAND  ((uint32_t) EPOLLWRBAND)
+#define EPOLLMSG     ((uint32_t) EPOLLMSG)
+#define EPOLLRDHUP   ((uint32_t) EPOLLRDHUP)
+#define EPOLLONESHOT ((uint32_t) EPOLLONESHOT)
 
 #define EPOLL_CTL_ADD 1
 #define EPOLL_CTL_MOD 2