diff --git a/USERGUIDE.md b/USERGUIDE.md
index 47398be87..57ec3a37a 100644
--- a/USERGUIDE.md
+++ b/USERGUIDE.md
@@ -760,7 +760,7 @@ Animation to play when opening the main menu or the game options menu. Can be se
 
 **Display pillarboxes for gamelist videos**
 
-With this option enabled, there are black pillarboxes (and to a lesser extent letterboxes) displayed around videos with non-standard aspect ratios. This will probably be most commonly used for vertical arcade shooters, or for game systems that has a screen in portrait orientation. For wider than normal videos, letterboxes are added, but this is quite rare compared to videos in portrait orientation. This option looks good on some themes such as rbsimple-DE, but on others it may be more visually pleasing to disable it.
+With this option enabled, there are black pillarboxes (and to a lesser extent letterboxes) displayed around videos with non-standard aspect ratios. This will probably be most commonly used for vertical arcade shooters, or for game systems that has a screen in portrait orientation. For wider than normal videos, letterboxes are added, but this is quite rare compared to videos in portrait orientation. This option looks good with some theme sets such as rbsimple-DE, but on others it may be more visually pleasing to disable it. On less wide displays such as those in 4:3 aspect ratio this option should probably be disabled as it may otherwise add quite excessive letterboxing.
 
 **Render scanlines for gamelist videos** _(OpenGL renderer only)_