diff --git a/usr.bin/rpcgen/rpcgen.1 b/usr.bin/rpcgen/rpcgen.1
index db26ef6908a..66b44673a10 100644
--- a/usr.bin/rpcgen/rpcgen.1
+++ b/usr.bin/rpcgen/rpcgen.1
@@ -283,7 +283,7 @@ option can be used in conjunction to produce a
 header which supports
 .Tn RPC
 dispatch tables.
-.Fl i Ar size
+.It Fl i Ar size
 Size at which to start generating inline code.
 This option is useful for optimization. The default size is 5.
 .Pp