diff --git a/bin/sh/sh.1 b/bin/sh/sh.1
--- a/bin/sh/sh.1
+++ b/bin/sh/sh.1
@@ -1945,8 +1945,9 @@
 .Ss Built-in Commands
 This section lists the built-in commands.
 .Bl -tag -width indent
-.It Ic \&:
+.It Ic \&: Op Ar arg Ar ...
 A null command that returns a 0 (true) exit value.
+Any arguments are discarded.
 .It Ic \&. Ar file
 The commands in the specified file are read and executed by the shell.
 The
@@ -1968,7 +1969,7 @@
 .It Ic \&[
 A built-in equivalent of
 .Xr test 1 .
-.It Ic alias Oo Ar name Ns Oo = Ns Ar string Oc ... Oc
+.It Ic alias Oo Ar name Ns Oo = Ns Ar string Oc Ar ... Oc
 If
 .Ar name Ns = Ns Ar string
 is specified, the shell defines the alias