diff --git a/cpp/IceGrid/icebox/HelloI.cpp b/cpp/IceGrid/icebox/HelloI.cpp
index 915bf401b..77ec420a1 100644
--- a/cpp/IceGrid/icebox/HelloI.cpp
+++ b/cpp/IceGrid/icebox/HelloI.cpp
@@ -2,6 +2,11 @@
 // Copyright (c) ZeroC, Inc. All rights reserved.
 //
 
+#ifdef _MSC_VER
+// For getenv
+#    define _CRT_SECURE_NO_WARNINGS
+#endif
+
 #include "HelloI.h"
 #include <Ice/Ice.h>
 #include <iostream>
diff --git a/cpp/IceStorm/clock/Publisher.cpp b/cpp/IceStorm/clock/Publisher.cpp
index bde6fa9f5..7b7846eb1 100644
--- a/cpp/IceStorm/clock/Publisher.cpp
+++ b/cpp/IceStorm/clock/Publisher.cpp
@@ -2,6 +2,11 @@
 // Copyright (c) ZeroC, Inc. All rights reserved.
 //
 
+#ifdef _MSC_VER
+// For getenv
+#    define _CRT_SECURE_NO_WARNINGS
+#endif
+
 #include "Clock.h"
 #include <Ice/Ice.h>
 #include <IceStorm/IceStorm.h>