diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi
index ac712c43208..afb1272ae41 100644
--- a/doc/lispref/display.texi
+++ b/doc/lispref/display.texi
@@ -4030,7 +4030,8 @@ that case, use @var{font-spec} for all the characters in the charset.
 char-script-table}).  In that case, use @var{font-spec} for all the
 characters belonging to the script.  See also
 @code{use-default-font-for-symbols}, which affects font selection
-when @var{characters} is @code{symbol}.
+when @var{characters} specify or belong to the @code{symbol} script
+(which includes symbol and punctuation characters).
 
 @var{characters} may be @code{nil}, which means to use @var{font-spec}
 for any character in @var{fontset} for which no font-spec is