diff --git a/src/index.html b/src/index.html
index 8ad2a37..17c99e9 100644
--- a/src/index.html
+++ b/src/index.html
@@ -73,7 +73,7 @@
                 <option value="decimalArray">Decimal array</option>
                 <option value="hex" selected>Hex</option>
                 <option value="base64">Base64</option>
-                <option value="ascii">Aescii</option>
+                <option value="ascii">Ascii</option>
             </select>
             <div class="paramTool" onclick="swap()">
                 <img src="../img/replace1.png" alt="copy" />