--- a/mobile/android/app/checkstyle.xml
+++ b/mobile/android/app/checkstyle.xml
@@ -40,13 +40,14 @@
     </module>
 
     <module name="TreeWalker">
         <module name="NoLineWrap">
             <property name="tokens" value="IMPORT,PACKAGE_DEF"/>
         </module>
         <module name="OuterTypeFilename"/> <!-- `class Lol` only in Lol.java -->
         <module name="WhitespaceAfter">
+            <!-- TODO: (bug 1263059) Remove specific tokens to enable CAST check. -->
             <property name="tokens" value="COMMA, SEMI"/>
         </module>
     </module>
 
 </module>