diff --git a/libc/include/sys/types.h b/libc/include/sys/types.h
index be9970ba0..dd1240afa 100644
--- a/libc/include/sys/types.h
+++ b/libc/include/sys/types.h
@@ -5,6 +5,10 @@
 
 __BEGIN_DECLS
 
-typedef int32_t pid_t;
+typedef int32_t id_t;
+typedef id_t pid_t;
+typedef id_t uid_t;
+typedef id_t gid_t;
+typedef uint16_t mode_t;
 
 __END_DECLS
\ No newline at end of file