diff --git a/libc/arch-x86/include/endian.h b/libc/arch-x86/include/endian.h
index 4a70536..e7ad257 100644
--- a/libc/arch-x86/include/endian.h
+++ b/libc/arch-x86/include/endian.h
@@ -65,6 +65,7 @@
 #endif	/* __GNUC__ */
 
 #define _BYTE_ORDER _LITTLE_ENDIAN
+#include <sys/types.h>
 #include <sys/endian.h>
 
 #endif /* _I386_ENDIAN_H_ */