diff --git a/docs/docsite/rst/dev_guide/developing_collections.rst b/docs/docsite/rst/dev_guide/developing_collections.rst
index fc363b0d94d..0549efe47a6 100644
--- a/docs/docsite/rst/dev_guide/developing_collections.rst
+++ b/docs/docsite/rst/dev_guide/developing_collections.rst
@@ -236,6 +236,7 @@ a tarball of the built collection in the current directory which can be uploaded
 .. note::
     Certain files and folders are excluded when building the collection artifact. This is not currently configurable
     and is a work in progress so the collection artifact may contain files you would not wish to distribute.
+    This includes any files built with ``mazer`` so delete those from :file:`releases/` before you build your collection with ``ansible-galaxy``.  The current Galaxy maximum tarball size is 2 MB.
 
 This tarball is mainly intended to upload to Galaxy
 as a distribution method, but you can use it directly to install the collection on target systems.