diff --git a/lib/nextSafe.js b/lib/nextSafe.js
index 3dfeeaf..600e49a 100644
--- a/lib/nextSafe.js
+++ b/lib/nextSafe.js
@@ -14,7 +14,7 @@ const buildPermissionsPolicyHeaders = require('./buildPermissionsPolicyHeaders.j
  * @returns {Header}
  */
 function makeHeaderObj(key, value, defaultValue) {
-	if (key === false) {
+	if (value === false) {
 		return undefined
 	}