diff --git a/ProcessWin32.c b/ProcessWin32.c
index c8ec75451..ef71f26da 100644
--- a/ProcessWin32.c
+++ b/ProcessWin32.c
@@ -36,6 +36,9 @@ a UNIX-style select system call.
 #pragma warning (push, 1)
 #endif
 #include <windows.h> /* Windows API */
+#if defined(_MSC_VER) && _MSC_VER >= 1800
+# define KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+#endif
 #include <string.h>  /* strlen, strdup */
 #include <stdio.h>   /* sprintf */
 #include <io.h>      /* _unlink */
@@ -335,7 +338,14 @@ kwsysProcess* kwsysProcess_New(void)
      windows.  */
   ZeroMemory(&osv, sizeof(osv));
   osv.dwOSVersionInfoSize = sizeof(osv);
+#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# pragma warning (push)
+# pragma warning (disable:4996)
+#endif
   GetVersionEx(&osv);
+#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# pragma warning (pop)
+#endif
   if(osv.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
     {
     /* Win9x no longer supported.  */
@@ -2370,7 +2380,14 @@ static kwsysProcess_List* kwsysProcess_List_New(void)
   /* Select an implementation.  */
   ZeroMemory(&osv, sizeof(osv));
   osv.dwOSVersionInfoSize = sizeof(osv);
+#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# pragma warning (push)
+# pragma warning (disable:4996)
+#endif
   GetVersionEx(&osv);
+#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# pragma warning (pop)
+#endif
   self->NT4 = (osv.dwPlatformId == VER_PLATFORM_WIN32_NT &&
                osv.dwMajorVersion < 5)? 1:0;
 
diff --git a/SystemInformation.cxx b/SystemInformation.cxx
index 2521aac9c..84b5f39f3 100644
--- a/SystemInformation.cxx
+++ b/SystemInformation.cxx
@@ -60,6 +60,9 @@
 
 #if defined(_WIN32)
 # include <windows.h>
+# if defined(_MSC_VER) && _MSC_VER >= 1800
+#  define KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# endif
 # include <errno.h>
 # if defined(KWSYS_SYS_HAS_PSAPI)
 #  include <psapi.h>
@@ -3786,7 +3789,7 @@ bool SystemInformationImplementation::QueryLinuxMemory()
     return false;
     }
 
-  if( unameInfo.release!=0 && strlen(unameInfo.release)>=3 )
+  if( strlen(unameInfo.release)>=3 )
     {
     // release looks like "2.6.3-15mdk-i686-up-4GB"
     char majorChar=unameInfo.release[0];
@@ -5063,6 +5066,10 @@ bool SystemInformationImplementation::QueryOSInformation()
   // Try calling GetVersionEx using the OSVERSIONINFOEX structure.
   ZeroMemory (&osvi, sizeof (OSVERSIONINFOEXW));
   osvi.dwOSVersionInfoSize = sizeof (OSVERSIONINFOEXW);
+#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# pragma warning (push)
+# pragma warning (disable:4996)
+#endif
   bOsVersionInfoEx = GetVersionExW ((OSVERSIONINFOW*)&osvi);
   if (!bOsVersionInfoEx)
     {
@@ -5072,6 +5079,9 @@ bool SystemInformationImplementation::QueryOSInformation()
       return false;
       }
     }
+#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# pragma warning (pop)
+#endif
 
   switch (osvi.dwPlatformId)
     {
diff --git a/SystemTools.cxx b/SystemTools.cxx
index 8a61267c9..b1221e3a8 100644
--- a/SystemTools.cxx
+++ b/SystemTools.cxx
@@ -82,6 +82,9 @@
 # ifndef INVALID_FILE_ATTRIBUTES
 #  define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
 # endif
+# if defined(_MSC_VER) && _MSC_VER >= 1800
+#  define KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# endif
 #elif defined (__CYGWIN__)
 # include <windows.h>
 # undef _WIN32
@@ -4629,6 +4632,10 @@ kwsys_stl::string SystemTools::GetOperatingSystemNameAndVersion()
   ZeroMemory(&osvi, sizeof(OSVERSIONINFOEXA));
   osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXA);
 
+#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# pragma warning (push)
+# pragma warning (disable:4996)
+#endif
   bOsVersionInfoEx = GetVersionEx((OSVERSIONINFO *)&osvi);
   if (!bOsVersionInfoEx)
     {
@@ -4638,6 +4645,9 @@ kwsys_stl::string SystemTools::GetOperatingSystemNameAndVersion()
       return 0;
       }
     }
+#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
+# pragma warning (pop)
+#endif
 
   switch (osvi.dwPlatformId)
     {