diff --git a/lib/linter/linter.js b/lib/linter/linter.js
index 0f1bd4f77611aa5ccc43c94385efd4f9b5639327..59ff9f14727e22bbec2cc7539af30305f759b23a 100644
--- a/lib/linter/linter.js
+++ b/lib/linter/linter.js
@@ -708,7 +708,7 @@ function createLanguageOptions({ globals: configuredGlobals, parser, parserOptio
  */
 function resolveGlobals(providedGlobals, enabledEnvironments) {
     return Object.assign(
-        {},
+        Object.create(null),
         ...enabledEnvironments.filter(env => env.globals).map(env => env.globals),
         providedGlobals
     );