diff --git a/man2/add_key.2 b/man2/add_key.2
index f2e0c96bc..b496df47b 100644
--- a/man2/add_key.2
+++ b/man2/add_key.2
@@ -75,15 +75,12 @@ and a colon (for instance
 .RB \*(lq afs:mykey \*(rq).
 The
 .I payload
-may be empty or
-.B NULL
-for keys of this type.
+may be empty or NULL for keys of this type.
 .TP
 .B \*(lqkeyring\*(rq
 Keyrings are special key types that may contain links to sequences of other
 keys of any type.
-If this interface is used to create a keyring, then a
-.B NULL
+If this interface is used to create a keyring, then a NULL
 .I payload
 should be specified, and
 .I plen
@@ -92,8 +89,7 @@ should be zero.
 On success
 .BR add_key ()
 returns the serial number of the key it created or updated.
-On error, the value
-.B -1
+On error, the value \-1
 will be returned and errno will have been set to an appropriate error.
 .SH ERRORS
 .TP