             className: "score-rank score-rank--#{event.scoreRank}"
 
         mappings =
-          user: link(event.user.url, event.user.username)
+          user: strong null, em null, link(event.user.url, event.user.username)
           rank: event.rank
-          beatmap: link(event.beatmap.url, event.beatmap.title)
+          beatmap: em null, link(event.beatmap.url, event.beatmap.title)
           mode: osu.trans "beatmaps.mode.#{event.mode}"
 
       when 'rankLost'
         mappings =
-          user: link(event.user.url, event.user.username)
+          user: strong null, em null, link(event.user.url, event.user.username)
           rank: event.rank
-          beatmap: link(event.beatmap.url, event.beatmap.title)
+          beatmap: em null, link(event.beatmap.url, event.beatmap.title)
           mode: osu.trans "beatmaps.mode.#{event.mode}"
 
       when 'userSupportAgain'
         mappings =
-          user: link(event.user.url, event.user.username)
+          user: strong null, link(event.user.url, event.user.username)
 
       when 'userSupportFirst'
         mappings =
-          user: link(event.user.url, event.user.username)
+          user: strong null, link(event.user.url, event.user.username)
 
       when 'userSupportGift'
         mappings =
-          user: link(event.user.url, event.user.username)
+          user: strong null, link(event.user.url, event.user.username)
 
       when 'usernameChange'
         mappings =
-          user: link(event.user.url, event.user.username)
-          previousUsername: event.user.previousUsername
+          user: strong null, em null, link(event.user.url, event.user.username)
+          previousUsername: strong null, event.user.previousUsername
 
       else
         # unkown event

        mappings =
          approval: osu.trans "events.beatmapset_status.#{event.approval}"
          beatmapset: link(event.beatmapset.url, event.beatmapset.title)
          user: link(event.user.url, event.user.username)

      when 'beatmapsetDelete'
        mappings =

      when 'beatmapsetRevive'
        mappings =
          beatmapset: link(event.beatmapset.url, event.beatmapset.title)
          user: strong null, link(event.user.url, event.user.username)

      when 'beatmapsetUpdate'
        mappings =
          user: strong null, em null, link(event.user.url, event.user.username)
          beatmapset: em null, link(event.beatmapset.url, event.beatmapset.title)

      when 'beatmapsetUpload'
        mappings =
          beatmapset: link(event.beatmapset.url, event.beatmapset.title)
          user: strong null, em null, link(event.user.url, event.user.username)

      when 'medal'
        # shouldn't exist because the type is overridden to achievement.
