diff --git a/buildengine/build_go_test.go b/buildengine/build_go_test.go
index 4d5ef5b112..3beab1cfdc 100644
--- a/buildengine/build_go_test.go
+++ b/buildengine/build_go_test.go
@@ -300,7 +300,6 @@ func TestGoModVersion(t *testing.T) {
 }
 
 func TestGeneratedTypeRegistry(t *testing.T) {
-	t.Skip("FLAKY")
 	if testing.Short() {
 		t.Skipf("skipping test in non-short mode")
 	}
diff --git a/buildengine/testdata/type_registry_main.go b/buildengine/testdata/type_registry_main.go
index d1e94075ca..28722bfd7f 100644
--- a/buildengine/testdata/type_registry_main.go
+++ b/buildengine/testdata/type_registry_main.go
@@ -9,20 +9,11 @@ import (
 	"github.com/TBD54566975/ftl/go-runtime/ftl/reflection"
 	"github.com/TBD54566975/ftl/go-runtime/server"
 
-	"ftl/another"
 	"ftl/other"
 )
 
 func init() {
 	reflection.Register(
-		reflection.SumType[another.SecondTypeEnum](
-			*new(another.One),
-			*new(another.Two),
-		),
-		reflection.SumType[another.TypeEnum](
-			*new(another.A),
-			*new(another.B),
-		),
 		reflection.SumType[other.SecondTypeEnum](
 			*new(other.A),
 			*new(other.B),