diff --git a/doc/PKGBUILD.5.txt b/doc/PKGBUILD.5.txt
index c0fa594..915b9aa 100644
--- a/doc/PKGBUILD.5.txt
+++ b/doc/PKGBUILD.5.txt
@@ -117,9 +117,10 @@ name. The syntax is: `source=('filename::url')`.
 *md5sums (array)*::
 	This array contains an MD5 hash for every source file specified in the
 	source array (in the same order). makepkg will use this to verify source
-	file integrity during subsequent builds. To easily generate md5sums, run
-	``makepkg -g >> PKGBUILD''. If desired, move the md5sums line to an
-	appropriate location.
+	file integrity during subsequent builds. If 'volatile' is put in the array
+	in place of a normal hash, the integrity check for that source file will
+	be skipped. To easily generate md5sums, run ``makepkg -g >> PKGBUILD''. If
+   	desired, move the md5sums line to an appropriate location.
 
 *sha1sums, sha256sums, sha384sums, sha512sums (arrays)*::
 	Alternative integrity checks that makepkg supports; these all behave