diff --git a/src/boot/efi/stub.c b/src/boot/efi/stub.c
index 0d9df7eb28..d9d515b1a9 100644
--- a/src/boot/efi/stub.c
+++ b/src/boot/efi/stub.c
@@ -50,11 +50,20 @@ static EFI_STATUS combine_initrd(
                 n += extra_initrd_sizes[i];
         }
 
+#if defined(__i386__) || defined(__x86_64__)
         _cleanup_pages_ Pages pages = xmalloc_pages(
                         AllocateMaxAddress,
                         EfiLoaderData,
                         EFI_SIZE_TO_PAGES(n),
                         UINT32_MAX /* Below 4G boundary. */);
+#else
+        _cleanup_pages_ Pages pages = xmalloc_pages(
+                        AllocateAnyPages,
+                        EfiLoaderData,
+                        EFI_SIZE_TO_PAGES(n),
+                        0 /* Ignored. */);
+#endif
+
         uint8_t *p = PHYSICAL_ADDRESS_TO_POINTER(pages.addr);
         if (initrd_base != 0) {
                 size_t pad;