diff --git a/documentation/content/en/books/porters-handbook/makefiles/_index.adoc b/documentation/content/en/books/porters-handbook/makefiles/_index.adoc
--- a/documentation/content/en/books/porters-handbook/makefiles/_index.adoc
+++ b/documentation/content/en/books/porters-handbook/makefiles/_index.adoc
@@ -77,7 +77,7 @@
 ====
 
 [[makefile-versions-ex-pkg-version]]
-.Using man:pkg-version[8] to Compare Versions.
+.Using man:pkg-version[8] to Compare Versions
 [example]
 ====
 `pkg version -t` takes two versions as arguments, it will respond with `<`, `=` or `>` if the first version is less, equal, or more than the second version, respectively.