diff --git a/src/mobility/wscript b/src/mobility/wscript
index 9fee254c7..2dadd0b31 100644
--- a/src/mobility/wscript
+++ b/src/mobility/wscript
@@ -17,6 +17,7 @@ def build(bld):
         'static-speed-helper.cc',
         'static-speed-mobility-model.cc',
         'random-waypoint-mobility-model.cc',
+        'random-walk-2d-mobility-model.cc',
         ]
 
     headers = bld.create_obj('ns3header')
@@ -35,4 +36,5 @@ def build(bld):
         'static-speed-helper.h',
         'static-speed-mobility-model.h',
         'random-waypoint-mobility-model.h',
+        'random-walk-2d-mobility-model.h',
         ]