diff --git a/romanToInt.php b/romanToInt.php
index 531d65f..3242b0f 100644
--- a/romanToInt.php
+++ b/romanToInt.php
@@ -134,7 +134,7 @@ class Solution {
         }
 
         echo sprintf(
-            'Succeeded: The value of \'%d\' matched the expected value of \'%s\'' . PHP_EOL,
+            'Succeeded: The value of \'%s\' matched the expected value of \'%s\'' . PHP_EOL,
             $val ? 'True' : 'False',
             $str
         );