diff --git a/codegen/testserver/interfaces_test.go b/codegen/testserver/interfaces_test.go
new file mode 100644
index 0000000000..d10f48b071
--- /dev/null
+++ b/codegen/testserver/interfaces_test.go
@@ -0,0 +1,16 @@
+package testserver
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestInterfaces(t *testing.T) {
+	t.Run("slices of interfaces are not pointers", func(t *testing.T) {
+		field, ok := reflect.TypeOf((*QueryResolver)(nil)).Elem().MethodByName("Shapes")
+		require.True(t, ok)
+		require.Equal(t, "[]testserver.Shape", field.Type.Out(0).String())
+	})
+}