diff --git a/index.js b/index.js
index 85ee9d9..0286913 100644
--- a/index.js
+++ b/index.js
@@ -616,7 +616,7 @@ function checkAuthetification(content) {
 }
 
 function check(content, input, data) {
-    if (inputin content) {
+    if (input in content) {
         if (content[input] in data) {
             return {
                 success: true,