diff --git a/lib/Analysis/IPA/CallGraph.cpp b/lib/Analysis/IPA/CallGraph.cpp
index df8d016..c84719f 100644
--- a/lib/Analysis/IPA/CallGraph.cpp
+++ b/lib/Analysis/IPA/CallGraph.cpp
@@ -150,6 +150,8 @@
 }
 
 void WriteToOutput(const CallGraph &CG, std::ostream &o) {
+  o << "CallGraph Root is:\n" << CG.getRoot();
+
   for (CallGraph::const_iterator I = CG.begin(), E = CG.end(); I != E; ++I)
     o << I->second;
 }