diff --git a/std/cstdlib.hpp b/std/cstdlib.hpp
index e119843d52..8268726dcf 100644
--- a/std/cstdlib.hpp
+++ b/std/cstdlib.hpp
@@ -1,11 +1,26 @@
 #pragma once
 
+#include "target_os.hpp"
+
 #ifdef new
 #undef new
 #endif
 
 #include <cstdlib>
 
+// setenv is absent in MSVC.
+#ifdef OMIM_OS_WINDOWS_NATIVE
+#include <cstdio> // Need it for snprintf.
+inline int setenv(char const * name, char const * value, int /*overwrite*/)
+{
+  char buffer[255];
+  int const err = ::snprintf(buffer, sizeof(buffer), "%s=%s", name, value);
+  if (err < 0 || err >= sizeof(buffer))
+    return -1;
+  return ::_putenv(buffer);
+}
+#endif
+
 #ifdef DEBUG_NEW
 #define new DEBUG_NEW
 #endif