--- a/dropbearkey.1	Mon Nov 23 23:04:48 2015 +0800
+++ b/dropbearkey.1	Wed Dec 02 22:37:51 2015 +0800
@@ -13,10 +13,7 @@
 .SH DESCRIPTION
 .B dropbearkey
 generates a
-.I RSA 
-.I DSS,
-or
-.I ECDSA
+\fIRSA\fR, \fIDSS\fR, or \fIECDSA\fR
 format SSH private key, and saves it to a file for the use with the
 Dropbear client or server.
 Note that 
@@ -34,7 +31,7 @@
 .TP
 .B \-f \fIfile
 Write the secret key to the file
-.IR file . For client authentication ~/.ssh/id_dropbear is loaded by default
+\fIfile\fR. For client authentication ~/.ssh/id_dropbear is loaded by default
 .TP
 .B \-s \fIbits
 Set the key size to