diff --git a/share/man/man5/intro.5 b/share/man/man5/intro.5
index 525d6801aaa..3e67b319da1 100644
--- a/share/man/man5/intro.5
+++ b/share/man/man5/intro.5
@@ -42,11 +42,12 @@ environment, including:
 .Pp
 .Bl -bullet -compact
 .It
-ASCII configuration and resource files
+.Xr ascii 7
+configuration and resource files
 .It
-System binary file and stream structures
+system binary file and stream structures
 .It
-Composition of database files
+composition of database files
 .El
 .Sh FILES
 .Bl -tag -width "/usr/local/etc/" -compact