diff --git a/reference/pdo_4d/examples.xml b/reference/pdo_4d/examples.xml
index 7006017539..55aeda636b 100644
--- a/reference/pdo_4d/examples.xml
+++ b/reference/pdo_4d/examples.xml
@@ -30,7 +30,7 @@ try {
 }
         
 $db->exec("INSERT INTO test VALUES('A', 'B')");
-$db->exec("INSERT INTO test VALUES('D', 'D')");
+$db->exec("INSERT INTO test VALUES('C', 'D')");
 $db->exec("INSERT INTO test VALUES('E', 'F')");
 
 $stmt = $db->prepare('SELECT id, val from test');