--- a/doc/manual/source/distributed.rst	Tue Apr 05 21:39:39 2011 +0200
+++ b/doc/manual/source/distributed.rst	Wed Apr 06 10:13:04 2011 -0700
@@ -118,7 +118,7 @@
 
 Configure |ns3| with the --enable-mpi option:::
 
-    ./waf -d debug configure --enable-mpi
+    ./waf -d debug configure --enable-tests --enable-mpi
 
 Ensure that MPI is enabled by checking the optional features shown from the
 output of configure.