diff --git a/package.json b/package.json
index d9710cc81f..02a9b8036d 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "build:indices": "babel-node src/_util/cli.js reindex",
     "build:tests:noskip": "rimraf test/languages && babel-node src/_util/cli.js writetests --noskip",
     "build:tests": "rimraf test/languages && babel-node src/_util/cli.js writetests",
-    "build": "npm-run-all build:*",
+    "build": "npm-run-all 'build:*'",
     "fix": "eslint src --fix",
     "injectweb": "rimraf website/source/{c,golang,php,python,ruby} && babel-node src/_util/cli.js injectweb",
     "lint": "eslint src",
@@ -80,8 +80,8 @@
     "release:minor": "cross-env SEMANTIC=minor yarn release",
     "release:patch": "cross-env SEMANTIC=patch yarn release",
     "release": "git commit CHANGELOG.md -m 'Update CHANGELOG.md' && npm version ${SEMANTIC:-patch} -m \"Release %s\" && git push --tags && git push && yarn build:dist && cd dist && npm publish",
-    "test:languages:noskip": "yarn build:tests:noskip && cross-env DEBUG=locutus:* mocha --compilers js:babel-register --reporter spec --recursive test/languages --grep \"${TEST_GREP:-}\"",
-    "test:languages": "yarn build:tests && cross-env DEBUG=locutus:* mocha --compilers js:babel-register --reporter spec --recursive test/languages --grep \"${TEST_GREP:-}\"",
+    "test:languages:noskip": "yarn build:tests:noskip && cross-env DEBUG='locutus:*' mocha --compilers js:babel-register --reporter spec --recursive test/languages --grep \"${TEST_GREP:-}\"",
+    "test:languages": "yarn build:tests && cross-env DEBUG='locutus:*' mocha --compilers js:babel-register --reporter spec --recursive test/languages --grep \"${TEST_GREP:-}\"",
     "test:module": "babel-node test/module/module.js",
     "test:util": "mocha --compilers js:babel-register --reporter spec test/util/",
     "test": "npm-run-all test:languages test:util test:module",