diff --git a/extensions/akismet/js/package.json b/extensions/akismet/js/package.json
index 1aef3b44c..9ee8a4c5b 100644
--- a/extensions/akismet/js/package.json
+++ b/extensions/akismet/js/package.json
@@ -11,7 +11,7 @@
         "check-typings": "tsc --noEmit --emitDeclarationOnly false",
         "check-typings-coverage": "typescript-coverage-report",
         "clean-typings": "npx rimraf dist-typings && mkdir dist-typings",
-        "build-typings": "npm run clean-typings && tsc && [[ -e src/@types ]] && cp -r src/@types dist-typings/@types"
+        "build-typings": "npm run clean-typings && tsc && [ -e src/@types ] && cp -r src/@types dist-typings/@types"
     },
     "devDependencies": {
         "@flarum/prettier-config": "^1.0.0",