diff --git a/libc/libc.arm.map b/libc/libc.arm.map
index bad3fec..c22535d 100644
--- a/libc/libc.arm.map
+++ b/libc/libc.arm.map
@@ -627,6 +627,7 @@
     madvise;
     mallinfo;
     malloc;
+    malloc_backtrace;
     malloc_disable;
     malloc_enable;
     malloc_iterate;