diff --git a/website/upgrade-guides/0-12.html.markdown b/website/upgrade-guides/0-12.html.markdown
index 8649d2657..b4025bd59 100644
--- a/website/upgrade-guides/0-12.html.markdown
+++ b/website/upgrade-guides/0-12.html.markdown
@@ -248,6 +248,17 @@ configurations to Terraform v0.11.14 first you can then perform v0.12 upgrades
of individual configurations in any order, without breaking
`terraform_remote_state` usage.
+Note that the `config` block should now be in the form of an assignment with the `=` sign:
+
+```hcl
+data "terraform_remote_state" "default" {
+ backend = "gcs"
+ config = {
+ bucket = "..."
+ }
+}
+```
+
### Attributes vs. blocks
Terraform resource configurations consist of both arguments that set