diff --git a/documentation/content/en/books/fdp-primer/writing-style/_index.adoc b/documentation/content/en/books/fdp-primer/writing-style/_index.adoc
--- a/documentation/content/en/books/fdp-primer/writing-style/_index.adoc
+++ b/documentation/content/en/books/fdp-primer/writing-style/_index.adoc
@@ -159,7 +159,7 @@
 +
 Right: ... in [.filename]#/etc/rc.local#...
 +
-Manual page references (the second example uses `citerefentry` with the man:csh[1] entity):.
+Manual page references (the second example uses `citerefentry` with the man:csh[1] entity):
 +
 Wrong: See `man csh` for more information.
 +