diff --git a/JetStreamDriver.js b/JetStreamDriver.js
index c88015d9..59f17117 100644
--- a/JetStreamDriver.js
+++ b/JetStreamDriver.js
@@ -277,9 +277,9 @@ class BrowserFileLoader {
             // The same preload blob may be used by multiple subtests. Though the blob is already loaded,
             // we still need to check if this subtest failed to load it before. If so, handle accordingly.
             if (type == "preload") {
-                if (this.failedPreloads && this.failedPreloads[blobData.prop]) {
-                    this.failedPreloads[blobData.prop] = false;
-                    this._preloadBlobData.push({ name: blobData.prop, resource: blobData.resource, blobURLOrPath: blobData.blobURL });
+                if (this.failedPreloads && this.failedPreloads[prop]) {
+                    this.failedPreloads[prop] = false;
+                    this._preloadBlobData.push({ name: prop, resource: blobData.resource, blobURLOrPath: blobData.blobURL });
                     counter.failedPreloadResources--;
                 }
             }
@@ -291,8 +291,8 @@ class BrowserFileLoader {
         await this.loadBlob(type, prop, file, false).then((blobData) => {
             if (!globalThis.allIsGood)
                 return;
-            if (blobData.type == "preload")
-                this._preloadBlobData.push({ name: blobData.prop, resource: blobData.resource, blobURLOrPath: blobData.blobURL });
+            if (type == "preload")
+                this._preloadBlobData.push({ name: prop, resource: blobData.resource, blobURLOrPath: blobData.blobURL });
             this.updateCounter();
         });
 
@@ -1172,7 +1172,7 @@ class Benchmark {
             promises.push(browserFileLoader.loadBlob("preload", name, resource).then((blobData) => {
                 if (!globalThis.allIsGood)
                     return;
-                this._preloadBlobData.push({ name: blobData.prop, resource: blobData.resource, blobURLOrPath: blobData.blobURL });
+                this._preloadBlobData.push({ name, resource: blobData.resource, blobURLOrPath: blobData.blobURL });
                 this.updateCounter();
             }).catch((error) => {
                 // We'll try again later in retryPrefetchResourceForBrowser(). Don't throw an error.
@@ -2428,11 +2428,14 @@ let BENCHMARKS = [
         ],
         tags: ["default", "js", "Generators"],
     }),
-    new DefaultBenchmark({
+    new AsyncBenchmark({
         name: "js-tokens",
         files: [
             "./workloads/js-tokens/js-tokens.js",
         ],
+        preload: {
+            SOURCE_CODE: "./workloads/js-tokens/js-tokens.js",
+        },
         tags: ["default", "js", "Generators"],
     }),
     new DefaultBenchmark({
diff --git a/workloads/js-tokens/js-tokens.js b/workloads/js-tokens/js-tokens.js
index 8385109c..e0b9d327 100644
--- a/workloads/js-tokens/js-tokens.js
+++ b/workloads/js-tokens/js-tokens.js
@@ -410,7 +410,6 @@ function jsTokensWrapperFunction() {
     };
 };
 
-const jsTokensSourceCode = jsTokensWrapperFunction.toString();
 const jsxSourceCode = `
 
 function Comment(props) {
@@ -437,11 +436,20 @@ function Comment(props) {
 const jsTokens = jsTokensWrapperFunction();
 
 class Benchmark {
+    EXPECTED_TOKEN_COUNT = 121975;
+
+    tokenCount = 0;
+    jsTokensSourceCode = "";
+
+    async init() {
+        this.jsTokensSourceCode = await JetStream.getString(JetStream.preload.SOURCE_CODE);
+    }
+
     runIteration() {
         this.tokenCount = 0;
 
         for (var i = 0; i < 25; i++) {
-            for (const token of jsTokens(jsTokensSourceCode))
+            for (const token of jsTokens(this.jsTokensSourceCode))
                 this.tokenCount++;
         }
 
@@ -452,7 +460,7 @@ class Benchmark {
     }
 
     validate(iterations) {
-        if (this.tokenCount !== 113975)
-            throw new Error(`this.tokenCount of ${this.tokenCount} is invalid!`);
+        if (this.tokenCount !== this.EXPECTED_TOKEN_COUNT)
+            throw new Error(`Expected this.tokenCount of ${this.EXPECTED_TOKEN_COUNT}, but got ${this.tokenCount}!`);
     }
 }