diff --git a/man2/mknod.2 b/man2/mknod.2
index 5b5067bc5..e93c3454a 100644
--- a/man2/mknod.2
+++ b/man2/mknod.2
@@ -83,7 +83,7 @@ respectively.
 If the file type is
 .B S_IFCHR
 or
-.B S_IFBLK
+.BR S_IFBLK ,
 then
 .I dev
 specifies the major and minor numbers of the newly created device