diff --git a/packages/blockly/package.json b/packages/blockly/package.json
index 9a91cfb48ac..450fd302a71 100644
--- a/packages/blockly/package.json
+++ b/packages/blockly/package.json
@@ -43,7 +43,7 @@
     "start": "npm run build && concurrently -n tsc,server \"tsc --watch --preserveWatchOutput --outDir \"build/src\" --declarationDir \"build/declarations\"\" \"http-server ./ -s -o /tests/playground.html -c-1\"",
     "tsc": "gulp tsc",
     "test": "gulp test",
-    "test:browser": "cd tests/browser && npx mocha",
+    "test:browser": "npx mocha --config tests/browser/.mocharc.js",
     "test:generators": "gulp testGenerators",
     "test:mocha:interactive": "npm run build && concurrently -n tsc,server \"tsc --watch --preserveWatchOutput --outDir \"build/src\" --declarationDir \"build/declarations\"\" \"gulp interactiveMocha\"",
     "test:compile:advanced": "gulp buildAdvancedCompilationTest --debug",
diff --git a/packages/blockly/tests/browser/.mocharc.js b/packages/blockly/tests/browser/.mocharc.js
index 879bb462378..3c407e688cd 100644
--- a/packages/blockly/tests/browser/.mocharc.js
+++ b/packages/blockly/tests/browser/.mocharc.js
@@ -3,4 +3,5 @@
 module.exports = {
   ui: 'tdd',
   require: __dirname + '/test/hooks.mjs',
+  spec: 'tests/browser/test/**/*_test.mjs',
 };