diff --git a/libc/bionic/posix_timers.cpp b/libc/bionic/posix_timers.cpp
index 3c664d9..9991573 100644
--- a/libc/bionic/posix_timers.cpp
+++ b/libc/bionic/posix_timers.cpp
@@ -31,6 +31,7 @@
 #include "private/kernel_sigset_t.h"
 
 #include <errno.h>
+#include <malloc.h>
 #include <stdio.h>
 #include <string.h>