diff --git a/packages/frontend/src/scripts/aiscript/api.ts b/packages/frontend/src/scripts/aiscript/api.ts
index bc79b3cc50..8afe88eec6 100644
--- a/packages/frontend/src/scripts/aiscript/api.ts
+++ b/packages/frontend/src/scripts/aiscript/api.ts
@@ -75,12 +75,13 @@ export function createAiScriptEnv(opts) {
 		*/
 		'Mk:save': values.FN_NATIVE(([key, value]) => {
 			utils.assertString(key);
+			utils.expectAny(value);
 			miLocalStorage.setItem(`aiscript:${opts.storageKey}:${key.value}`, JSON.stringify(utils.valToJs(value)));
 			return values.NULL;
 		}),
 		'Mk:load': values.FN_NATIVE(([key]) => {
 			utils.assertString(key);
-			return utils.jsToVal(JSON.parse(miLocalStorage.getItem(`aiscript:${opts.storageKey}:${key.value}`)));
+			return utils.jsToVal(miLocalStorage.getItemAsJson(`aiscript:${opts.storageKey}:${key.value}`) ?? null);
 		}),
 		'Mk:remove': values.FN_NATIVE(([key]) => {
 			utils.assertString(key);