diff --git a/libraries/ui/src/main/res/values/attrs.xml b/libraries/ui/src/main/res/values/attrs.xml
index 36cd681105..01e64e3c07 100644
--- a/libraries/ui/src/main/res/values/attrs.xml
+++ b/libraries/ui/src/main/res/values/attrs.xml
@@ -24,7 +24,7 @@
     <enum name="zoom" value="4"/>
   </attr>
 
-  <!-- Must be kept in sync with LegacyPlayerView and PlayerView -->
+  <!-- Must be kept in sync with PlayerView -->
   <attr name="surface_type" format="enum">
     <enum name="none" value="0"/>
     <enum name="surface_view" value="1"/>
@@ -40,7 +40,7 @@
     <flag name="all" value="2"/>
   </attr>
 
-  <!-- LegacyPlayerView and PlayerView attributes -->
+  <!-- PlayerView attributes -->
   <attr name="use_artwork" format="boolean"/>
   <attr name="artwork_display_mode" format="enum">
     <enum name="off" value="0"/>
diff --git a/libraries/ui/src/main/res/values/constants.xml b/libraries/ui/src/main/res/values/constants.xml
index 9bd616583e..f495e5a531 100644
--- a/libraries/ui/src/main/res/values/constants.xml
+++ b/libraries/ui/src/main/res/values/constants.xml
@@ -21,7 +21,6 @@
   <integer name="exo_media_button_opacity_percentage_enabled">100</integer>
   <integer name="exo_media_button_opacity_percentage_disabled">33</integer>
 
-  <color name="exo_error_message_background_color">#AA000000</color>
   <color name="exo_edit_mode_background_color">#FFF4F3F0</color>
 
 </resources>