diff --git a/man4/lp.4 b/man4/lp.4
index c22e1517a..a10fe1bfe 100644
--- a/man4/lp.4
+++ b/man4/lp.4
@@ -125,7 +125,7 @@ Note that undocumented bits may also be set, depending on your printer.
 Resets the printer.
 No argument is used.
 .SH FILES
-/dev/lp*
+.I /dev/lp*
 .\" .SH AUTHORS
 .\" The printer driver was originally written by Jim Weigand and Linus
 .\" Torvalds.