diff --git a/src/d3d10/d3d10_interfaces.h b/src/d3d10/d3d10_interfaces.h
index aa028ab575..99f1dc4567 100644
--- a/src/d3d10/d3d10_interfaces.h
+++ b/src/d3d10/d3d10_interfaces.h
@@ -1,9 +1,3 @@
 #pragma once
 
 #include "d3d10_include.h"
-
-#ifdef _MSC_VER
-struct __declspec(uuid("0803425a-57f5-4dd6-9465-a87570834a08")) ID3D10StateBlock;
-#else
-__CRT_UUID_DECL(ID3D10StateBlock, 0x0803425a,0x57f5,0x4dd6,0x94,0x65,0xa8,0x75,0x70,0x83,0x4a,0x08);
-#endif
diff --git a/src/d3d9/d3d9_include.h b/src/d3d9/d3d9_include.h
index 21dadb942d..ae06b15371 100644
--- a/src/d3d9/d3d9_include.h
+++ b/src/d3d9/d3d9_include.h
@@ -80,11 +80,6 @@
 
 // MinGW headers are broken. Who'dve guessed?
 #ifndef _MSC_VER
-typedef struct _D3DDEVINFO_RESOURCEMANAGER
-{
-  char dummy;
-} D3DDEVINFO_RESOURCEMANAGER, * LPD3DDEVINFO_RESOURCEMANAGER;
-
 #ifndef __WINE__
 extern "C" WINUSERAPI WINBOOL WINAPI SetProcessDPIAware(VOID);
 #endif