diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index 7c0d433..3cfd6d0 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -42,7 +42,7 @@
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Config/config.h"
 #include <algorithm>
-#include <ios>
+#include <sstream>
 using namespace llvm;
 
 namespace {
diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index 7c0d433..3cfd6d0 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -42,7 +42,7 @@
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Config/config.h"
 #include <algorithm>
-#include <ios>
+#include <sstream>
 using namespace llvm;
 
 namespace {
diff --git a/lib/Target/SubtargetFeature.cpp b/lib/Target/SubtargetFeature.cpp
index 8062123..4669e0f 100644
--- a/lib/Target/SubtargetFeature.cpp
+++ b/lib/Target/SubtargetFeature.cpp
@@ -15,6 +15,7 @@
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/Streams.h"
 #include <algorithm>
+#include <ostream>
 #include <cassert>
 #include <cctype>
 using namespace llvm;