diff --git a/src/mobility/mobility-helper.cc b/src/mobility/mobility-helper.cc
index c8e02262a..b34c919d5 100644
--- a/src/mobility/mobility-helper.cc
+++ b/src/mobility/mobility-helper.cc
@@ -14,6 +14,7 @@ MobilityHelper::MobilityHelper ()
 {
   m_position = CreateObjectWith<RandomRectanglePositionAllocator> ("X", ConstantVariable (0.0),
 								   "Y", ConstantVariable (0.0));
+  m_mobility.SetTypeId ("StaticMobilityModel");
 }
 void 
 MobilityHelper::EnableNotifier (void)