diff --git a/share/man/man7/mdoc.7 b/share/man/man7/mdoc.7
index 397bf0a5470d..a56441b693e7 100644
--- a/share/man/man7/mdoc.7
+++ b/share/man/man7/mdoc.7
@@ -303,6 +303,7 @@ Produces
 .It Li \&Ot Ta Yes Ta Yes Ta "Old style function type (Fortran only)."
 .It Li \&Pa Ta Yes Ta Yes Ta "Pathname or file name."
 .It Li \&St Ta Yes Ta Yes Ta "Standards (-p1003.2, -p1003.1 or -ansiC)"
+.It Li \&Ta Ta Yes Ta Yes Ta "Tab align next table column."
 .It Li \&Va Ta Yes Ta Yes Ta "Variable name."
 .It Li \&Vt Ta Yes Ta Yes Ta "Variable type (Fortran only)."
 .It Li \&Xr Ta Yes Ta Yes Ta "Manual Page Cross Reference."