diff --git a/install/install.queries.php b/install/install.queries.php
index a40fab370..bc0e6df8a 100755
--- a/install/install.queries.php
+++ b/install/install.queries.php
@@ -1561,9 +1561,9 @@ function encryptFollowingDefuse($message, $ascii_key)
                     }
                     unlink($csrfp_file); // delete existing csrfp.config file
                     copy($csrfp_file_sample, $csrfp_file); // make a copy of csrfp.config.sample file
-                    $inputData['data'] = file_get_contents($csrfp_file);
-                    $newdata = str_replace('"CSRFP_TOKEN" => ""', '"CSRFP_TOKEN" => "' . bin2hex(openssl_random_pseudo_bytes(25)) . '"', $inputData['data']);
-                    $jsUrl = $data_sent['url_path'] . '/includes/libraries/csrfp/js/csrfprotector.js';
+                    $data = file_get_contents($csrfp_file);
+                    $newdata = str_replace('"CSRFP_TOKEN" => ""', '"CSRFP_TOKEN" => "' . bin2hex(openssl_random_pseudo_bytes(25)) . '"', $data);
+                    $jsUrl = './includes/libraries/csrfp/js/csrfprotector.js';
                     $newdata = str_replace('"jsUrl" => ""', '"jsUrl" => "' . $jsUrl . '"', $newdata);
                     file_put_contents('../includes/libraries/csrfp/libs/csrfp.config.php', $newdata);
 
@@ -1618,4 +1618,4 @@ function encryptFollowingDefuse($message, $ascii_key)
             session_destroy();
             break;
     }
-}
\ No newline at end of file
+}