diff --git a/libdl/libdl_cfi.cpp b/libdl/libdl_cfi.cpp
index 3b68fc7..23cd7f5 100644
--- a/libdl/libdl_cfi.cpp
+++ b/libdl/libdl_cfi.cpp
@@ -26,15 +26,15 @@
 // dlopen/dlclose.
 static struct {
   uintptr_t v;
-  char padding[PAGE_SIZE - sizeof(v)];
-} shadow_base_storage alignas(PAGE_SIZE);
+  char padding[max_page_size() - sizeof(v)];
+} shadow_base_storage alignas(max_page_size());
 
 // __cfi_init is called by the loader as soon as the shadow is mapped. This may happen very early
 // during startup, before libdl.so global constructors, and, on i386, even before __libc_sysinfo is
 // initialized. This function should not do any system calls.
 extern "C" uintptr_t* __cfi_init(uintptr_t shadow_base) {
   shadow_base_storage.v = shadow_base;
-  static_assert(sizeof(shadow_base_storage) == PAGE_SIZE, "");
+  static_assert(sizeof(shadow_base_storage) == max_page_size(), "");
   return &shadow_base_storage.v;
 }