diff --git a/docs/how-to/field-configuration.md b/docs/how-to/field-configuration.md
index 0b84bd70..795aa0c8 100644
--- a/docs/how-to/field-configuration.md
+++ b/docs/how-to/field-configuration.md
@@ -1,5 +1,8 @@
 # Configuring translatable fields
 
+!!! attention
+    It is not currently possible to configure `StructBlock` translatable fields. See [Issue #307](https://github.com/wagtail/wagtail-localize/issues/307) for more details.
+
 By default, Wagtail Localize will decide for you which fields are translatable and which fields should just be synchronised.
 This is decided by some simple rules described in the [Auto-generation of Translatable Fields](/concept/translatable-fields-autogen)
 explanation.