1 files changed, 5 insertions, 1 deletions
diff --git a/libavcodec/dxva2_mpeg2.c b/libavcodec/dxva2_mpeg2.c
index 62308b403e..2d88f9b804 100644
--- a/libavcodec/dxva2_mpeg2.c
+++ b/libavcodec/dxva2_mpeg2.c
@@ -21,10 +21,14 @@
  */
 
 #include "libavutil/log.h"
-#include "dxva2_internal.h"
 #include "mpegutils.h"
 #include "mpegvideo.h"
 
+// The headers above may include w32threads.h, which uses the original
+// _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
+// potentially newer version.
+#include "dxva2_internal.h"
+
 #define MAX_SLICES 1024
 struct dxva2_picture_context {
     DXVA_PictureParameters pp;