diff --git a/htroot/Performance_p.html b/htroot/Performance_p.html
index 9883ce3f6..cd05b5e3c 100644
--- a/htroot/Performance_p.html
+++ b/htroot/Performance_p.html
@@ -27,7 +27,7 @@
         <legend>Memory Settings</legend>
         <dl>
           <dt><label for="Xmx">Memory reserved for JVM</label></dt>
-          <dd><input name="Xmx" id="Xmx" type="text" size="4" maxlength="4" value="#[Xmx]#" /> MByte&nbsp;
+          <dd><input name="Xmx" id="Xmx" type="text" size="5" maxlength="5" value="#[Xmx]#" /> MByte&nbsp;
               <input type="submit" name="setStartup" value="Set" />&nbsp;
               #(setStartupCommit)#::<div class="commit">Accepted change. This will take effect after <strong>restart</strong> of YaCy</div>::<div class="error"></div>#(/setStartupCommit)#
           </dd>