diff --git a/libc/private/bionic_name_mem.h b/libc/private/bionic_name_mem.h
index 98716f4..1c7664e 100644
--- a/libc/private/bionic_name_mem.h
+++ b/libc/private/bionic_name_mem.h
@@ -34,7 +34,7 @@
 
 __BEGIN_DECLS
 
-int __bionic_name_mem(void* addr, size_t len, const char* name);
+__LIBC_HIDDEN__ int __bionic_name_mem(void* addr, size_t len, const char* name);
 
 __END_DECLS