diff --git a/src/logger-ui.html b/src/logger-ui.html
index 887c2dede..70a7a6fee 100644
--- a/src/logger-ui.html
+++ b/src/logger-ui.html
@@ -50,7 +50,7 @@
                 <span id="filterButton" class="button fa-icon" data-i18n-title="loggerRowFiltererButtonTip">filter</span>
                 <span id="filterInput">
                     <input type="text" placeholder="logFilterPrompt">
-                    <span id="filterExprButton" class="button fa-icon" data-i18n-title="loggerRowFiltererBuiltinTip">angle-up</span>
+                    <span id="filterExprButton" class="button fa-icon expanded" data-i18n-title="loggerRowFiltererBuiltinTip">angle-up</span>
                     <div id="filterExprPicker">
                         <div><span data-filtex="!" data-i18n="loggerRowFiltererBuiltinNot"></span><span data-filtex="^--$|^<<$|^##" data-i18n="loggerRowFiltererBuiltinBlocked"></span><span data-filtex="^\+\+$|^\*\*$|^#@#" data-i18n="loggerRowFiltererBuiltinAllowed"></span></div>
                         <div><span data-filtex="!" data-i18n="loggerRowFiltererBuiltinNot"></span><span data-filtex="^(?:css|font)$">css/font</span><span data-filtex="^image$">image</span><span data-filtex="^(?:inline-)?script(?:ing)?$">script</span><span data-filtex="^(?:websocket|xhr)$">xhr</span><span data-filtex="^frame$">frame</span><span data-filtex="^dom$">dom</span></div>