diff --git a/docker-devicemapper-loop-lvm-doc.md b/docker-devicemapper-loop-lvm-doc.md
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@@ -0,0 +1,13 @@
+
+
+In
+
+<https://docs.docker.com/engine/userguide/storagedriver/device-mapper-driver/#configure-loop-lvm-mode-for-testing>
+
+> They are supposed for testing because the set-up is easier.
+
+should probably be
+
+> They are supported for testing because the set-up is easier.
+
+