diff --git a/samples/wscript b/samples/wscript
index ee8cd4f3a..bc60c482a 100644
--- a/samples/wscript
+++ b/samples/wscript
@@ -5,19 +5,19 @@ def build(bld):
     if not env['ENABLE_EXAMPLES']:
         return;
 
-    obj = bld.create_ns3_program('main-attribute-value')
+    obj = bld.create_ns3_program('main-attribute-value', ['core', 'node'])
     obj.source = 'main-attribute-value.cc'
 
-    obj = bld.create_ns3_program('main-callback')
+    obj = bld.create_ns3_program('main-callback', ['core'])
     obj.source = 'main-callback.cc'
 
-    obj = bld.create_ns3_program('main-simulator')
+    obj = bld.create_ns3_program('main-simulator', ['core'])
     obj.source = 'main-simulator.cc'
 
-    obj = bld.create_ns3_program('main-ptr')
+    obj = bld.create_ns3_program('main-ptr', ['core'] )
     obj.source = 'main-ptr.cc'
 
-    obj = bld.create_ns3_program('main-random-variable')
+    obj = bld.create_ns3_program('main-random-variable', ['core', 'contrib'])
     obj.source = 'main-random-variable.cc'
 
     obj = bld.create_ns3_program('main-packet-header', ['common', 'simulator'])