diff --git a/lib/libarchive/libarchive-formats.5 b/lib/libarchive/libarchive-formats.5
index 8dc2d2abc52..7ed18daed38 100644
--- a/lib/libarchive/libarchive-formats.5
+++ b/lib/libarchive/libarchive-formats.5
@@ -235,16 +235,6 @@ compressed with the
 .Dq deflate
 algorithm.
 Older zip compression algorithms are not supported.
-.Ss Tp Formats
-The libarchive library has experimental support for tp format,
-which was used in Fourth Edition through Sixth Edition Unix.
-(It was supplanted by tar in Seventh Edition Unix.)
-There were several distinct variants of this format; libarchive
-supports the original tp format and the itp variant.
-Currently, tp format support is not enabled by
-.Fn archive_read_support_format_all ,
-it must be explicitly enabled by calling
-.Fn archive_read_support_format_tp .
 .Sh SEE ALSO
 .Xr cpio 1 ,
 .Xr mkisofs 1 ,