diff --git a/edit.php b/edit.php
index 3b0dd95..0eb7adb 100644
--- a/edit.php
+++ b/edit.php
@@ -40,7 +40,7 @@
 				<td><input type="text" name="email" value="<?php echo $email;?>"></td>
 			</tr>
 			<tr>
-				<td><input type="hidden" name="id" value=<?php echo $_GET['id'];?>></td>
+				<td><input type="hidden" name="id" value=<?php echo htmlspecialchars($_GET['id'], ENT_QUOTES, 'UTF-8');?>></td>
 				<td><input type="submit" name="update" value="Update"></td>
 			</tr>
 		</table>