diff --git a/libavformat/os_support.c b/libavformat/os_support.c
index 49ec0c60d1..6d8c8ac6a3 100644
--- a/libavformat/os_support.c
+++ b/libavformat/os_support.c
@@ -266,7 +266,7 @@ int ff_socket_nonblock(int socket, int enable)
 }
 
 #if !HAVE_POLL_H
-int poll(struct pollfd *fds, nfds_t numfds, int timeout)
+int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout)
 {
     fd_set read_set;
     fd_set write_set;
diff --git a/libavformat/os_support.h b/libavformat/os_support.h
index cda84b0296..dfb87ef43a 100644
--- a/libavformat/os_support.h
+++ b/libavformat/os_support.h
@@ -101,7 +101,8 @@ struct pollfd {
 #endif
 
 
-int poll(struct pollfd *fds, nfds_t numfds, int timeout);
+int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
+#define poll ff_poll
 #endif /* HAVE_POLL_H */
 #endif /* CONFIG_NETWORK */