diff --git a/libc/isystem/poll.h b/libc/isystem/poll.h
index 92ca439f6..5326a1d0b 100644
--- a/libc/isystem/poll.h
+++ b/libc/isystem/poll.h
@@ -1,5 +1,6 @@
 #ifndef LIBC_ISYSTEM_POLL_H_
 #define LIBC_ISYSTEM_POLL_H_
 #include "libc/sock/sock.h"
+#include "libc/sock/struct/pollfd.h"
 #include "libc/sysv/consts/poll.h"
 #endif