diff --git a/doc/man/emacs.1.in b/doc/man/emacs.1.in
index e332fb45c7b..62afec65378 100644
--- a/doc/man/emacs.1.in
+++ b/doc/man/emacs.1.in
@@ -279,8 +279,8 @@ window's width, height, and position as specified.
 The geometry specification is in the standard X format; see
 .BR X (7)
 for more information.
-The width and height are specified in characters; the default is
-80 by 24.
+The width and height are specified in characters; the default for GUI
+frames is 80 by 36.
 See the Emacs manual, section "Options for Window Size and Position",
 for information on how window sizes interact
 with selecting or deselecting the tool bar and menu bar.