diff --git a/lib/Analysis/CFGPrinter.cpp b/lib/Analysis/CFGPrinter.cpp
index a762a8e5f8c..9dc4ba639c7 100644
--- a/lib/Analysis/CFGPrinter.cpp
+++ b/lib/Analysis/CFGPrinter.cpp
@@ -25,6 +25,7 @@
 #include "llvm/Support/CFG.h"
 #include "llvm/Support/GraphWriter.h"
 #include "llvm/Config/config.h"
+#include <iostream>
 #include <sstream>
 #include <fstream>
 using namespace llvm;