diff --git a/doc/man/s3fs.1 b/doc/man/s3fs.1
index 5687bc3..b3169df 100644
--- a/doc/man/s3fs.1
+++ b/doc/man/s3fs.1
@@ -53,9 +53,6 @@ the default canned acl to apply to all written S3 objects, e.g., "public-read".
 Any created files will have this canned acl.
 Any updated files will also have this canned acl applied!
 .TP
-\fB\-o\fR prefix (default="") (coming soon!)
-a prefix to append to all S3 objects.
-.TP
 \fB\-o\fR retries (default="2")
 number of times to retry a failed S3 transaction.
 .TP