--- a/toolkit/components/passwordmgr/.eslintrc
+++ b/toolkit/components/passwordmgr/.eslintrc
@@ -8,16 +8,19 @@
     "brace-style": [2, "1tbs", {"allowSingleLine": true}],
 
     // No space before always a space after a comma
     "comma-spacing": [2, {"before": false, "after": true}],
 
     // Commas at the end of the line not the start
     "comma-style": 2,
 
+    // Use [] instead of Array()
+    "no-array-constructor": 2,
+
     // Use {} instead of new Object()
     "no-new-object": 2,
 
     // No using undeclared variables
     "no-undef": 2,
 
     // Don't allow unused local variables unless they match the pattern
     "no-unused-vars": [2, {"args": "none", "vars": "local", "varsIgnorePattern": "^(ids|ignored|unused)$"}],