(no commit message)

diff --git a/magick/nt-base.h b/magick/nt-base.h
index 071ae186d79b7ca8adc4969ac064adc6d95b0970..a6b5da393fc679532a8135ca3b62102d242b01dd 100644 (file)
--- a/magick/nt-base.h
+++ b/magick/nt-base.h
@@ -29,7 +29,9 @@ extern "C" {
 #define WIN32_LEAN_AND_MEAN
 #define VC_EXTRALEAN
 #define _CRT_SECURE_NO_DEPRECATE  1
+#if !defined(_WIN32_WINNT)
 #define _WIN32_WINNT 0x0501
+#endif
 #include <windows.h>
 #include <wchar.h>
 #include <winuser.h>