--- zip.c
+++ zip.c
@@ -730,6 +730,7 @@
 "  -r        recurse into directories (see Recursion below)",
 "  -m        after archive created, delete original files (move into archive)",
 "  -j        junk directory names (store just file names)",
+"  -k        Attempt to convert the names and paths to conform to MSDOS",
 "  -q        quiet operation",
 "  -v        verbose operation (just \"zip -v\" shows version information)",
 "  -c        prompt for one-line comment for each entry",