diff --git a/karma.conf.js b/karma.conf.js
index c1e73de..9e9100b 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -1,26 +1,25 @@
 // eslint-disable-next-line @typescript-eslint/no-require-imports
 const webpackConfig = require("./webpack.config");
 
-module.exports = function(config) {
-    config.set({
+module.exports = function (config) {
+  config.set({
+    basePath: "",
+    frameworks: ["mocha", "chai"],
+    files: ["test/unit/*.ts"],
+    exclude: [],
+    preprocessors: {
+      "test/unit/run-web-implementation.test.ts": ["webpack"],
+    },
+    webpack: {
+      mode: "production",
+      node: webpackConfig.node,
+      module: webpackConfig.module,
+      resolve: webpackConfig.resolve,
+    },
+    reporters: ["spec"],
 
-        basePath: "",
-        frameworks: ["mocha", "chai"],
-        files: ["test/unit/*.ts"],
-        exclude: [],
-        preprocessors: {
-            "test/**/*.ts": ["webpack"]
-        },
-        webpack: {
-            mode: "production",
-            node: webpackConfig.node,
-            module: webpackConfig.module,
-            resolve: webpackConfig.resolve
-        },
-        reporters: ["spec"],
+    browsers: ["ChromeHeadless"],
 
-        browsers: ["ChromeHeadless"],
-
-        singleRun: true
-    });
-};
\ No newline at end of file
+    singleRun: true,
+  });
+};
diff --git a/test/unit/run-all-implementations.test.ts b/test/unit/run-all-implementations.test.ts
index 854d6e3..ea90530 100644
--- a/test/unit/run-all-implementations.test.ts
+++ b/test/unit/run-all-implementations.test.ts
@@ -4,6 +4,7 @@ import {runPublicKeyTests} from "./publicKey.test";
 import {runIndexTests} from "./index.test";
 import {forEachImplementation} from "../switch";
 
+// Import test's bls lib lazily to prevent breaking test with Karma
 forEachImplementation(["blst", "herumi"], (bls) => {
   runPrivateKeyTests(bls);
   runPublicKeyTests(bls);
diff --git a/test/unit/run-web-implementation.test.ts b/test/unit/run-web-implementation.test.ts
index ea06044..31d18e0 100644
--- a/test/unit/run-web-implementation.test.ts
+++ b/test/unit/run-web-implementation.test.ts
@@ -1,12 +1,19 @@
+import herumi from "../../src/herumi";
 import {runPrivateKeyTests} from "./privateKey.test";
 import {runPublicKeyTests} from "./publicKey.test";
 // import {runKeypairTests} from "./keypair.test";
 import {runIndexTests} from "./index.test";
-import {forEachImplementation} from "../switch";
 
-forEachImplementation(["herumi"], (bls) => {
-  runPrivateKeyTests(bls);
-  runPublicKeyTests(bls);
+// This file is intended to be compiled and run by Karma
+// Do not import the node.bindings or it will break with:
+// Error: BLST bindings loader should only run in a NodeJS context: process.platform
+describe("herumi", () => {
+  before(async () => {
+    await herumi.initBLS();
+  });
+
+  runPrivateKeyTests(herumi);
+  runPublicKeyTests(herumi);
   // runKeypairTests(bls);
-  runIndexTests(bls);
+  runIndexTests(herumi);
 });