My mistake, fixed

indra/newview/skins/default/xui/en-us/notifications.xml

@@ -53,6 +53,20 @@
     </form>
   </template>
 
+  <template name="okcancelbuttonscanceldefault">
+    <form>
+      <button
+       index="0"
+       name="OK"
+       text="$yestext"/>
+      <button
+       default="true"
+       index="1"
+       name="Cancel"
+       text="$notext"/>
+    </form>
+  </template>
+
   <template name="okcancelignore">
     <form>
       <button

indra/newview/skins/default/xui/es/notifications.xml

@@ -37,6 +37,13 @@
 			<button name="Cancel" text="$notext"/>
 		</form>
 	</template>
+
+	<template name="okcancelbuttonscanceldefault">
+		<form>
+			<button name="OK" text="$yestext"/>
+			<button name="Cancel" text="$notext"/>
+		</form>
+	</template>
 	
 	<template name="okcancelignore">
 		<form>