diff --git a/lib/xos-genx/tests/optimize_test.py b/lib/xos-genx/tests/optimize_test.py
index af40575..0d2c1b1 100644
--- a/lib/xos-genx/tests/optimize_test.py
+++ b/lib/xos-genx/tests/optimize_test.py
@@ -1,6 +1,5 @@
 import unittest
 from xosgenx.jinja2_extensions.fol2 import FOL2Python
-import vimpdb
 
 class XProtoOptimizeTest(unittest.TestCase):
     def setUp(self):
diff --git a/lib/xos-genx/tests/translator_test.py b/lib/xos-genx/tests/translator_test.py
index e82af6d..fad4dba 100644
--- a/lib/xos-genx/tests/translator_test.py
+++ b/lib/xos-genx/tests/translator_test.py
@@ -228,6 +228,33 @@
         output = XOSGenerator.generate(args)
         self.assertNotIn('default:', output)
 
+    def test_one_to_many_in_modeldef(self):
+        xproto = \
+"""
+option app_label = "test";
+
+message ServiceDependency {
+    required manytoone provider_service->Service:provided_dependencies = 1;
+    required manytoone subscriber_service->Service:subscribed_dependencies = 2;
+}
+
+message Service {
+    required string name = 1;
+}
+"""
+
+        args = FakeArgs()
+        args.inputs = xproto
+        args.target = 'modeldefs.xtarget'
+        output = XOSGenerator.generate(args)
+        # Service deps model
+        self.assertIn('{model: Service, type: manytoone, on_field: provider_service}', output)
+        self.assertIn('{model: Service, type: manytoone, on_field: provider_service}', output)
+
+        # Service model
+        self.assertIn('{model: ServiceDependency, type: onetomany, on_field: provider_service}', output)
+        self.assertIn('{model: ServiceDependency, type: onetomany, on_field: provider_service}', output)
+
 if __name__ == '__main__':
     unittest.main()