diff --git a/man/man8/zpool.8 b/man/man8/zpool.8
index 28517e4757..800ada5666 100644
--- a/man/man8/zpool.8
+++ b/man/man8/zpool.8
@@ -1889,12 +1889,12 @@ flag.
 .It Fl T Sy u Ns | Ns Sy d
 Display a time stamp.
 Specify
-.Fl u
+.Sy u
 for a printed representation of the internal representation of time.
 See
 .Xr time 2 .
 Specify
-.Fl d
+.Sy d
 for standard date format.
 See
 .Xr date 1 .
@@ -2265,12 +2265,12 @@ underlying storage.
 .It Fl T Sy u Ns | Ns Sy d
 Display a time stamp.
 Specify
-.Fl u
+.Sy u
 for a printed representation of the internal representation of time.
 See
 .Xr time 2 .
 Specify
-.Fl d
+.Sy d
 for standard date format.
 See
 .Xr date 1 .