diff --git a/bin/ps/ps.1 b/bin/ps/ps.1
index ad506e475728..e00d313ddd78 100644
--- a/bin/ps/ps.1
+++ b/bin/ps/ps.1
@@ -142,7 +142,7 @@ column is not the last column displayed.
 .It Fl e
 Display the environment as well.
 .It Fl f
-Show commandline and environment information about swapped out processes.
+Show command-line and environment information about swapped out processes.
 This option is honored only if the UID of the user is 0.
 .It Fl G
 Display information about processes which are running with the specified