diff --git a/doc/filters.texi b/doc/filters.texi
index 8cba7f744d..571d9430c6 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -15096,7 +15096,7 @@ expression
 
 @end table
 
-All expressions default to "val".
+All expressions default to "clipval".
 
 @subsection Commands