diff --git a/wscript b/wscript
index d21b913..95b16a1 100644
--- a/wscript
+++ b/wscript
@@ -82,7 +82,7 @@
         return
 
     module_dirs = ['NFD', 'apps', 'helper', 'model', 'utils']
-    
+
     module.source = bld.path.ant_glob(['%s/**/*.cpp' % dir for dir in module_dirs],
                                       excl=['model/ip-faces/*'])
 
@@ -92,6 +92,9 @@
     if bld.env.ENABLE_EXAMPLES:
         bld.recurse('examples')
 
+    if bld.env.ENABLE_TESTS:
+        bld.recurse('tests')
+
     bld.ns3_python_bindings()
 
 @TaskGen.feature('ns3fullmoduleheaders')