* doc/make.texi: Clarify implicit rule lookup of phony targets

Reported by Frank Heckenbach <f.heckenbach@fh-soft.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/filedef.h b/filedef.h
index f458551..f4dfa87 100644
--- a/filedef.h
+++ b/filedef.h
@@ -143,7 +143,7 @@ void print_file_data_base (void);
                                       & ((1 << FILE_TIMESTAMP_LO_BITS) - 1)))
 
 /* Upper bound on length of string "YYYY-MM-DD HH:MM:SS.NNNNNNNNN"
-   representing a file timestamp.  The upper bound is not necessarily 19,
+   representing a file timestamp.  The upper bound is not necessarily 29,
    since the year might be less than -999 or greater than 9999.
 
    Subtract one for the sign bit if in case file timestamps can be negative;