diff --git a/src/drivers/s3.ts b/src/drivers/s3.ts
index 30798b11..22efd6ce 100644
--- a/src/drivers/s3.ts
+++ b/src/drivers/s3.ts
@@ -74,7 +74,7 @@ export default defineDriver((options: S3DriverOptions) => {
 
   const baseURL = `${options.endpoint.replace(/\/$/, "")}/${options.bucket || ""}`;
 
-  const url = (key: string = "") => `${baseURL}/${normalizeKey(key)}`;
+  const url = (key: string = "") => `${baseURL}/${normalizeKey(key, "/")}`;
 
   const awsFetch = async (url: string, opts?: RequestInit) => {
     const request = await getAwsClient().sign(url, opts);
diff --git a/src/drivers/utils/index.ts b/src/drivers/utils/index.ts
index 6bba218c..16e584a3 100644
--- a/src/drivers/utils/index.ts
+++ b/src/drivers/utils/index.ts
@@ -11,11 +11,14 @@ export function defineDriver<OptionsT = any, InstanceT = never>(
   return factory;
 }
 
-export function normalizeKey(key: string | undefined): string {
+export function normalizeKey(
+  key: string | undefined,
+  sep: ":" | "/" = ":"
+): string {
   if (!key) {
     return "";
   }
-  return key.replace(/[/\\]/g, ":").replace(/^:|:$/g, "");
+  return key.replace(/[:/\\]/g, sep).replace(/^[:/\\]|[:/\\]$/g, "");
 }
 
 export function joinKeys(...keys: string[]) {
diff --git a/test/drivers/s3.test.ts b/test/drivers/s3.test.ts
index e836c174..e507a9df 100644
--- a/test/drivers/s3.test.ts
+++ b/test/drivers/s3.test.ts
@@ -1,6 +1,7 @@
-import { describe } from "vitest";
+import { describe, it, expect } from "vitest";
 import s3Driver from "../../src/drivers/s3";
 import { testDriver } from "./utils";
+import { AwsClient } from "aws4fetch";
 
 const accessKeyId = process.env.VITE_S3_ACCESS_KEY_ID;
 const secretAccessKey = process.env.VITE_S3_SECRET_ACCESS_KEY;
@@ -20,5 +21,25 @@ describe.skipIf(
         endpoint: endpoint!,
         region: region!,
       }),
+    additionalTests(ctx) {
+      it("can access directly with / separator", async () => {
+        await ctx.storage.set("foo/bar:baz", "ok");
+        expect(await ctx.storage.get("foo/bar:baz")).toBe("ok");
+
+        const client = new AwsClient({
+          accessKeyId: accessKeyId!,
+          secretAccessKey: secretAccessKey!,
+          region,
+        });
+        const response = await client.fetch(
+          `${endpoint}/${bucket}/foo/bar/baz`,
+          {
+            method: "GET",
+          }
+        );
+        expect(response.status).toBe(200);
+        expect(await response.text()).toBe("ok");
+      });
+    },
   });
 });