diff --git a/reactos/w32api/include/mediaerr.h b/reactos/w32api/include/mediaerr.h
new file mode 100644
index 00000000000..22eea872ba3
--- /dev/null
+++ b/reactos/w32api/include/mediaerr.h
@@ -0,0 +1,11 @@
+#ifndef _MEDIAERR_H_
+#define _MEDIAERR_H_
+
+#define DMO_E_INVALIDSTREAMINDEX        0x80040201
+#define DMO_E_INVALIDTYPE               0x80040202
+#define DMO_E_TYPE_NOT_SET              0x80040203
+#define DMO_E_NOTACCEPTING              0x80040204
+#define DMO_E_TYPE_NOT_ACCEPTED         0x80040205
+#define DMO_E_NO_MORE_ITEMS             0x80040206
+
+#endif _MEDIAERR_H_