diff --git a/cpp/include/Freeze/Map.h b/cpp/include/Freeze/Map.h
index 2ec759d..d8ef692 100644
--- a/cpp/include/Freeze/Map.h
+++ b/cpp/include/Freeze/Map.h
@@ -15,7 +15,7 @@
 #include <Freeze/DB.h>
 #include <Freeze/Exception.h>
 #include <Freeze/Connection.h>
-
+#include <cstddef>
 //
 // Berkeley DB's DbEnv
 //
diff --git a/cpp/include/Ice/Buffer.h b/cpp/include/Ice/Buffer.h
index 6f7ebab..9501f08 100644
--- a/cpp/include/Ice/Buffer.h
+++ b/cpp/include/Ice/Buffer.h
@@ -12,6 +12,8 @@
 
 #include <Ice/Config.h>
 
+#include <cstddef>
+
 namespace IceInternal
 {
 
diff --git a/cpp/src/Ice/ConnectionFactory.cpp b/cpp/src/Ice/ConnectionFactory.cpp
index ee201fd..c5cfae1 100644
--- a/cpp/src/Ice/ConnectionFactory.cpp
+++ b/cpp/src/Ice/ConnectionFactory.cpp
@@ -26,6 +26,7 @@
 #include <Ice/Functional.h>
 #include <IceUtil/Random.h>
 #include <iterator>
+#include <cstddef>
 
 using namespace std;
 using namespace Ice;
diff --git a/cpp/src/Ice/ConnectionI.cpp b/cpp/src/Ice/ConnectionI.cpp
index 2d942ca..a864509 100644
--- a/cpp/src/Ice/ConnectionI.cpp
+++ b/cpp/src/Ice/ConnectionI.cpp
@@ -26,6 +26,7 @@
 #include <Ice/ReferenceFactory.h> // For createProxy().
 #include <Ice/ProxyFactory.h> // For createProxy().
 #include <bzlib.h>
+#include <cstddef>
 
 using namespace std;
 using namespace Ice;
diff --git a/cpp/src/Ice/Reference.cpp b/cpp/src/Ice/Reference.cpp
index 875b64e..6f84069 100644
--- a/cpp/src/Ice/Reference.cpp
+++ b/cpp/src/Ice/Reference.cpp
@@ -28,7 +28,7 @@
 #include <IceUtil/StringUtil.h>
 #include <IceUtil/Random.h>
 #include <IceUtil/MutexPtrLock.h>
-
+#include <cstddef>
 #include <functional>
 
 using namespace std;
diff --git a/cpp/src/IceGrid/Util.h b/cpp/src/IceGrid/Util.h
index 72ffded..0047e57 100644
--- a/cpp/src/IceGrid/Util.h
+++ b/cpp/src/IceGrid/Util.h
@@ -16,6 +16,7 @@
 #include <IceUtil/Random.h>
 #include <functional>
 #include <iterator>
+#include <cstddef>
 
 namespace IceGrid
 {
diff --git a/cpp/src/slice2freeze/Main.cpp b/cpp/src/slice2freeze/Main.cpp
index 7e2afb2..af68a7d 100644
--- a/cpp/src/slice2freeze/Main.cpp
+++ b/cpp/src/slice2freeze/Main.cpp
@@ -19,6 +19,7 @@
 #include <IceUtil/OutputUtil.h>
 #include <IceUtil/StringUtil.h>
 #include <cstring>
+#include <cstddef>
 
 using namespace std;
 using namespace IceUtil;
diff --git a/cpp/test/Ice/binding/AllTests.cpp b/cpp/test/Ice/binding/AllTests.cpp
index f4da896..912aed1 100644
--- a/cpp/test/Ice/binding/AllTests.cpp
+++ b/cpp/test/Ice/binding/AllTests.cpp
@@ -12,7 +12,7 @@
 #include <TestCommon.h>
 #include <Test.h>
 #include <set>
-
+#include <cstddef>
 #include <functional>
 
 using namespace std;