diff --git a/packages/appsync-modelgen-plugin/API.md b/packages/appsync-modelgen-plugin/API.md
index 323c2559b..4304bec61 100644
--- a/packages/appsync-modelgen-plugin/API.md
+++ b/packages/appsync-modelgen-plugin/API.md
@@ -100,8 +100,6 @@ export type FieldType = ScalarType | {
     model: string;
 } | {
     nonModel: string;
-} | {
-    interface: string;
 };
 
 // @public (undocumented)