diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index cb4e5ec7f3f9c82efd89dbc0e409292f65cfea39..2b2a2d9d1b63c7fcad86ec1c1eb392f6f56f179c 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -10604,7 +10604,7 @@
   <key>RenderSkyAutoAdjustLegacy</key>
   <map>
     <key>Comment</key>
-    <string>If true, automatically adjust legacy skies (those without a probe ambiance value) to take advantage of probes and HDR.</string>
+    <string>If true, automatically adjust legacy skies (those without a probe ambiance value) to take advantage of probes and HDR.  This is the "opt-out" button for HDR and tonemapping when coupled with a sky setting that predates PBR.</string>
     <key>Persist</key>
     <integer>1</integer>
     <key>Type</key>
diff --git a/indra/newview/skins/default/xui/en/floater_preferences_graphics_advanced.xml b/indra/newview/skins/default/xui/en/floater_preferences_graphics_advanced.xml
index c1a94a2128c7b1c586971b4daf39dd37e653b2b3..fd806739031949c98841f649f8f901c05161c9bd 100644
--- a/indra/newview/skins/default/xui/en/floater_preferences_graphics_advanced.xml
+++ b/indra/newview/skins/default/xui/en/floater_preferences_graphics_advanced.xml
@@ -600,20 +600,6 @@
       function="Pref.RenderOptionUpdate" />
   </check_box>
 
-  <check_box
-  control_name="RenderSkyAutoAdjustLegacy"
-  height="16"
-  initial_value="true"
-  label="Auto-adjust Legacy Sky"
-  layout="topleft"
-  left="420"
-  name="AutoAdjustLegacySky"
-  top_delta="16"
-  width="240">
-    <check_box.commit_callback
-      function="Pref.RenderOptionUpdate" />
-  </check_box>
-
   <check_box
     control_name="RenderDepthOfField"
     height="16"