diff --git a/lib/galaxy/config/sample/container_resolvers_conf.xml.sample b/lib/galaxy/config/sample/container_resolvers_conf.xml.sample
index 1f6c32ed67c..78051d5cb64 100644
--- a/lib/galaxy/config/sample/container_resolvers_conf.xml.sample
+++ b/lib/galaxy/config/sample/container_resolvers_conf.xml.sample
@@ -52,7 +52,7 @@
        or more package requirements listed as part of the tool's definition.
        Set auto_install to False if Galaxy should build container images
        through the admin interface or API, but not automatically when
-       a tool is run.
+       a tool is run. WARNING: requires docker to be installed.
 
   -->