diff --git a/libc/include/poll.h b/libc/include/poll.h
index 0f5758d..8517dc6 100644
--- a/libc/include/poll.h
+++ b/libc/include/poll.h
@@ -38,9 +38,8 @@
 
 typedef unsigned int nfds_t;
 
-int poll(struct pollfd*, nfds_t, int) __overloadable __RENAME_CLANG(poll);
-int ppoll(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*)
-        __overloadable __RENAME_CLANG(ppoll) __INTRODUCED_IN(21);
+int poll(struct pollfd* __fds, nfds_t __count, int __timeout_ms) __overloadable __RENAME_CLANG(poll);
+int ppoll(struct pollfd* __fds, nfds_t __count, const struct timespec* __timeout, const sigset_t* __mask) __overloadable __RENAME_CLANG(ppoll) __INTRODUCED_IN(21);
 
 #if defined(__BIONIC_INCLUDE_FORTIFY_HEADERS)
 #include <bits/fortify/poll.h>
@@ -48,4 +47,4 @@
 
 __END_DECLS
 
-#endif /* _POLL_H_ */
+#endif