diff --git a/include/llvm/Bytecode/WriteBytecodePass.h b/include/llvm/Bytecode/WriteBytecodePass.h
index 3e6d7fef715..ffb0e9af3cf 100644
--- a/include/llvm/Bytecode/WriteBytecodePass.h
+++ b/include/llvm/Bytecode/WriteBytecodePass.h
@@ -10,6 +10,7 @@
 
 #include "llvm/Pass.h"
 #include "llvm/Bytecode/Writer.h"
+#include <iostream>
 
 class WriteBytecodePass : public Pass {
   std::ostream *Out;           // ostream to print on
diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp
index dcce830d16c..e918a248550 100644
--- a/lib/VMCore/Constants.cpp
+++ b/lib/VMCore/Constants.cpp
@@ -12,6 +12,7 @@
 #include "llvm/SlotCalculator.h"
 #include "Support/StringExtras.h"
 #include <algorithm>
+#include <iostream>
 
 using std::map;
 using std::pair;