diff --git a/doc/general.texi b/doc/general.texi
index b08d64fdf00ec6bfb1b7135925e56d0325973edb..e51771a182c2cd311e537097fce4c2a8a838b9b4 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -963,7 +963,7 @@ following image formats are supported:
     @tab Used in Quake III, Jedi Knight 2 and other computer games.
 @item DPCM Interplay         @tab     @tab  X
     @tab Used in various Interplay computer games.
-@item DPCM Squareroot-Delta-Exact
+@item DPCM Squareroot-Delta-Exact  @tab  @tab  X
     @tab Used in various games.
 @item DPCM Sierra Online     @tab     @tab  X
     @tab Used in Sierra Online game audio files.