There is no X(1) man page, only X(7).

diff --git a/etc/emacs.1 b/etc/emacs.1
index ef945420de2a8e11bfbd01eb37e8332c8ee280d9..94d640fb24fdfbef9e2dc54c994c6ee427cfcf0b 100644 (file)
--- a/etc/emacs.1
+++ b/etc/emacs.1
@@ -245,7 +245,7 @@ Set the
 .I Emacs
 window's width, height, and position as specified.  The geometry
 specification is in the standard X format; see
-.IR X (1)
+.IR X (7)
 for more information.
 The width and height are specified in characters; the default is 80 by
 24.  See the Emacs manual, section "Options for Window Size and Position",