diff --git a/usr.bin/false/false.1 b/usr.bin/false/false.1
index a85c60d5e919..bde0ad47ed5d 100644
--- a/usr.bin/false/false.1
+++ b/usr.bin/false/false.1
@@ -47,7 +47,15 @@
 The
 .Nm
 utility always returns with a non-zero exit code.
+.Pp
+Some shells may provide a builtin
+.Nm
+command which is similar or identical to this utility.
+Consult the
+.Xr builtin 1
+manual page.
 .Sh SEE ALSO
+.Xr builtin 1 ,
 .Xr csh 1 ,
 .Xr sh 1 ,
 .Xr true 1
diff --git a/usr.bin/true/true.1 b/usr.bin/true/true.1
index e212e1f55fad..d7599f87f0bb 100644
--- a/usr.bin/true/true.1
+++ b/usr.bin/true/true.1
@@ -47,7 +47,15 @@
 The
 .Nm
 utility always returns with an exit code of zero.
+.Pp
+Some shells may provide a builtin
+.Nm
+command which is similar or identical to this utility.
+Consult the
+.Xr builtin 1
+manual page.
 .Sh SEE ALSO
+.Xr builtin 1 ,
 .Xr csh 1 ,
 .Xr false 1 ,
 .Xr sh 1