diff --git a/hypervisor/boot/guest/bzimage_loader.c b/hypervisor/boot/guest/bzimage_loader.c
index 56220dfbc..bb81fb91a 100644
--- a/hypervisor/boot/guest/bzimage_loader.c
+++ b/hypervisor/boot/guest/bzimage_loader.c
@@ -274,7 +274,7 @@ static uint64_t create_zero_page(struct acrn_vm *vm, uint64_t load_params_gpa)
 
 	stac();
 	/* clear the zeropage */
-	(void)memset(zeropage, 0U, MEM_2K);
+	(void)memset(zeropage, 0U, MEM_4K);
 
 #ifdef CONFIG_MULTIBOOT2
 	if (is_service_vm(vm)) {