diff --git a/checkpolicy/checkpolicy.8 b/checkpolicy/checkpolicy.8
index 1552f497..db57751c 100644
--- a/checkpolicy/checkpolicy.8
+++ b/checkpolicy/checkpolicy.8
@@ -40,7 +40,8 @@ Enable the MLS policy when checking and compiling the policy.
 Specify the policy version, defaults to the latest.
 .TP
 .B \-o,\-\-output filename
-Write a binary policy file to the specified filename.
+Write a policy file (binary, policy.conf, or CIL policy)
+to the specified filename.
 .TP
 .B \-S,\-\-sort
 Sort ocontexts before writing out the binary policy. This option makes output of checkpolicy consistent with binary policies created by semanage and secilc.