diff --git a/src/mixins/async.ts b/src/mixins/async.ts
index fd5c4422..a091214b 100644
--- a/src/mixins/async.ts
+++ b/src/mixins/async.ts
@@ -239,7 +239,7 @@ export function Async<const T extends typeof FileSystem>(FS: T): Mixin<T, AsyncM
 						// @ts-expect-error 2556
 						this._sync?.[`${key}Sync` as const]?.(...args);
 					} catch (e: any) {
-						throw new ErrnoError(e.errno, 'Out of sync! (' + e.message + ')', args[0] as string, key);
+						if (e.code != 'ENOENT') throw new ErrnoError(e.errno, 'Out of sync! (' + e.message + ')', args[0] as string, key);
 					}
 					return result;
 				};
diff --git a/src/utils.ts b/src/utils.ts
index 8cbbe895..819457e3 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -172,10 +172,5 @@ export type Concrete<T extends ClassLike> = Pick<T, keyof T> & (new (...args: an
  * @internal
  */
 export function randomBigInt(): bigint {
-	try {
-		return crypto.getRandomValues(new BigUint64Array(1))[0];
-	} catch {
-		// fallback
-		return BigInt('0x' + randomHex(16 /* 4 bits per char */));
-	}
+	return BigInt('0x' + randomHex(8));
 }