diff --git a/plugin/modelgen/testdata/schema.graphql b/plugin/modelgen/testdata/schema.graphql
index 4c4b601c8ca..16556243bf7 100644
--- a/plugin/modelgen/testdata/schema.graphql
+++ b/plugin/modelgen/testdata/schema.graphql
@@ -126,7 +126,7 @@ interface D implements A & B {
     d: String
 }
 
-type CDImplemented implements C & D {
+type CDImplemented implements C & D & A & B {
     a: String!
     b: Int!
     c: Boolean!