diff --git a/package.json b/package.json
index d916181f..0fbd3df8 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "clean": "rm -rf node_modules/ build/ vendor/ .nyc_output/ coverage/ test/fixtures/output.*",
     "test": "semistandard && cc && npm run test-unit && npm run test-licensing && prebuild-ci",
     "test-unit": "nyc --reporter=lcov --branches=99 mocha --slow=5000 --timeout=60000 ./test/unit/*.js",
-    "test-licensing": "license-checker --production --summary --onlyAllow 'Apache-2.0;BSD;ISC;MIT'",
+    "test-licensing": "license-checker --production --summary --onlyAllow=\"Apache-2.0;BSD;ISC;MIT\"",
     "test-coverage": "./test/coverage/report.sh",
     "test-leak": "./test/leak/leak.sh",
     "docs": "for m in constructor input resize composite operation colour channel output utility; do documentation build --shallow --format=md --markdown-toc=false lib/$m.js >docs/api-$m.md; done"