diff --git a/libc/libc.arm.map b/libc/libc.arm.map
index abab364..1ed4ec6 100644
--- a/libc/libc.arm.map
+++ b/libc/libc.arm.map
@@ -1372,6 +1372,8 @@
     posix_spawnp;
     pthread_attr_getinheritsched;
     pthread_attr_setinheritsched;
+    pthread_mutexattr_getprotocol;
+    pthread_mutexattr_setprotocol;
     pthread_setschedprio;
     sethostent;
     setnetent;