diff --git a/libc/malloc_hooks/malloc_hooks.cpp b/libc/malloc_hooks/malloc_hooks.cpp
index 07b668f..b1c1d50 100644
--- a/libc/malloc_hooks/malloc_hooks.cpp
+++ b/libc/malloc_hooks/malloc_hooks.cpp
@@ -48,7 +48,7 @@
 // ------------------------------------------------------------------------
 __BEGIN_DECLS
 
-bool hooks_initialize(const MallocDispatch* malloc_dispatch, int* malloc_zygote_child,
+bool hooks_initialize(const MallocDispatch* malloc_dispatch, bool* zygote_child,
     const char* options);
 void hooks_finalize();
 void hooks_get_malloc_leak_info(
@@ -97,7 +97,7 @@
 __END_DECLS
 // ------------------------------------------------------------------------
 
-bool hooks_initialize(const MallocDispatch* malloc_dispatch, int*, const char*) {
+bool hooks_initialize(const MallocDispatch* malloc_dispatch, bool*, const char*) {
   g_dispatch = malloc_dispatch;
   __malloc_hook = default_malloc_hook;
   __realloc_hook = default_realloc_hook;