diff --git a/templates/index.html b/templates/index.html
index bee5498..367320f 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -11,7 +11,7 @@
             <span class="number" id="operation">+</span>
             <span class="number" id="second">0</span>
             <div>
-                <input id="answer" type="tel" size="2" class="number" autofocus />
+                <input id="answer" type="number" size="2" class="number" autofocus />
             </div>
         </section>
         <footer>