diff --git a/DOCS/man/vo.rst b/DOCS/man/vo.rst
index c472ad26f9..7ac4cfe367 100644
--- a/DOCS/man/vo.rst
+++ b/DOCS/man/vo.rst
@@ -663,8 +663,12 @@ Available video output drivers are:
         visible portion of the video, so you can't have subtitles exist in the
         black margins below a video (for example).
 
-        .. warning:: This mangles colors in an incorrect way, but is on the
-                     other hand needed if an icc-profile is used.
+        .. warning:: This changes the way subtitle colors are handled. Normally,
+                     subtitle colors are assumed to be in sRGB and color managed
+                     as such. Enabling this makes them treated as being in the
+                     video's color space instead. This is good if you want
+                     things like softsubbed ASS signs to match the video colors,
+                     but may cause SRT subtitles or similar to look slightly off.
 
     ``alpha=<blend|yes|no>``
         Decides what to do if the input has an alpha component (default: blend).