diff --git a/Make b/Make
index 88ee1b8b0b..bac7814339 100755
--- a/Make
+++ b/Make
@@ -101,7 +101,11 @@ sh -c 'git describe --abbrev=4 HEAD' >/dev/null 2>&1 || {
 	$GIT describe --abbrev=4 HEAD | sed -e 's/-/./g' >version
 }
 
-d="$d ASCIIDOC_NO_ROFF=YesPlease ASCIIDOC8=YesPlease BLK_SHA1=YesPlease"
+d="$d "'
+ASCIIDOC_NO_ROFF=YesPlease
+ASCIIDOC8=YesPlease
+BLK_SHA1=YesPlease
+GNU_ROFF=YesPlease'
 
 # Platform hack
 if test -z "${make:+set}" && {