diff --git a/docs/defaults/overlay_variables.md b/docs/defaults/overlay_variables.md
index 3d83d447..2efb13d6 100644
--- a/docs/defaults/overlay_variables.md
+++ b/docs/defaults/overlay_variables.md
@@ -1,5 +1,7 @@
 # Shared Overlay Template Variables
 
+IMPORTANT: The variables in this table are only valid in the context of the [`PMM default metadata files`](guide).
+
 There are some `template_variables` that all the PMM Defaults except `franchise` can use to manipulate the file from the default settings which are provided. 
 
 Note that the `template_variables:` section only needs to be used if you do want to actually change how the defaults work. Any value not specified is its default value if it has one if not it's just ignored.