diff --git a/html/config.html b/html/config.html
index af73339d..14c9f056 100644
--- a/html/config.html
+++ b/html/config.html
@@ -11,8 +11,8 @@
         <li><span><input type="checkbox" id="logs" {{ logs }} ></input></span><label for="logs"> Logs</label></li>
         <li><span><input type="checkbox" id="showKeysPanel" {{ showKeysPanel }}></input></span><label for="showKeysPanel"> Show keys panel</label></li>
         <li><span><input type="checkbox" id="socket" {{ socket }} ></input></span><label for="socket"> Socket</label></li>
-        <li><input type="number" class="form-control" placeholder="Port" id="port" value="{{ port }}" title="Port"></input></li>
-        <li><input type="number" class="form-control" placeholder="Ssl Port" id="sslPort" value="{{ sslPort }}" title="SSL Port"></input></li>
+        <li><input type="number" min="0" max="65535" class="form-control" placeholder="Port" id="port" value="{{ port }}" title="Port"></input></li>
+        <li><input type="number" min="0" max="65535" class="form-control" placeholder="Ssl Port" id="sslPort" value="{{ sslPort }}" title="SSL Port"></input></li>
         <li><span><input type="checkbox" id="ssl" {{ ssl }} ></input></span><label for="ssl"> SSL</label></li>
     </div>
 </div>