diff --git a/ci/install-dependencies.sh b/ci/install-dependencies.sh
index d64667fcbf..76ec308965 100755
--- a/ci/install-dependencies.sh
+++ b/ci/install-dependencies.sh
@@ -54,6 +54,9 @@ StaticAnalysis)
 Documentation)
 	sudo apt-get -q update
 	sudo apt-get -q -y install asciidoc xmlto
+
+	test -n "$ALREADY_HAVE_ASCIIDOCTOR" ||
+	gem install asciidoctor
 	;;
 esac
 
diff --git a/ci/test-documentation.sh b/ci/test-documentation.sh
index be3b7d376a..8f91f48c81 100755
--- a/ci/test-documentation.sh
+++ b/ci/test-documentation.sh
@@ -5,9 +5,6 @@
 
 . ${0%/*}/lib.sh
 
-test -n "$ALREADY_HAVE_ASCIIDOCTOR" ||
-gem install asciidoctor
-
 make check-builtins
 make check-docs