--- a/src/core/wscript	Sun Jun 16 13:30:41 2013 +0200
+++ b/src/core/wscript	Tue Jun 18 09:46:32 2013 -0700
@@ -147,6 +147,7 @@
         'model/vector.cc',
         'model/fatal-impl.cc',
         'model/system-path.cc',
+        'helper/random-variable-stream-helper.cc',
         ]
 
     core_test = bld.create_ns3_module_test_library('core')
@@ -246,6 +247,7 @@
         'model/system-path.h',
         'model/unused.h',
         'model/math.h',
+        'helper/random-variable-stream-helper.h',
         ]
 
     if sys.platform == 'win32':