diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index af8e550..3e4d36e 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1345,6 +1345,8 @@
 
 LIBC_P {
   global:
+    __freading; # future
+    __fwriting; # future
     getlogin_r; # future
 } LIBC_O;