diff --git a/SQL/sql4.php b/SQL/sql4.php
index df124a1..c04fcac 100644
--- a/SQL/sql4.php
+++ b/SQL/sql4.php
@@ -9,7 +9,7 @@
 	<form action="<?php $_SERVER['PHP_SELF']; ?>" method="post" >
 		<p>Give me book's number and I give you book's name in my library.</p>
 		Book's number : <input type="text" name="number">
-		<input type="submit" name="submit">
+		<input type="submit" name="submit" value="Submit">
 		<!--<p>Im learning something, I think?
 		    I will sanitize query this time!!
 		    //I'm the best web developer.