diff --git a/guacamole/src/main/webapp/layouts/en-us-qwerty-mobile.xml b/guacamole/src/main/webapp/layouts/en-us-qwerty-mobile.xml
index f2c84af59..953fcc243 100644
--- a/guacamole/src/main/webapp/layouts/en-us-qwerty-mobile.xml
+++ b/guacamole/src/main/webapp/layouts/en-us-qwerty-mobile.xml
@@ -116,7 +116,7 @@
     <row><gap size="0.1"/></row>
 
     <row>
-        <key size="1.85">
+        <key size="1.85" class="numsym">
             <cap modifier="numsym" sticky="true">?123</cap>
         </key>
         <gap size="0.1"/>
diff --git a/guacamole/src/main/webapp/styles/keyboard.css b/guacamole/src/main/webapp/styles/keyboard.css
index f7d0ee95e..bf93eed88 100644
--- a/guacamole/src/main/webapp/styles/keyboard.css
+++ b/guacamole/src/main/webapp/styles/keyboard.css
@@ -78,7 +78,8 @@
     border-color: #666;
 }
 
-.guac-keyboard.guac-keyboard-modifier-shift .guac-keyboard-key.shift {
+.guac-keyboard.guac-keyboard-modifier-shift .guac-keyboard-key.shift,
+.guac-keyboard.guac-keyboard-modifier-numsym .guac-keyboard-key.numsym {
     background: #882;
     border-color: #DD4;
 }