diff --git a/dlls/d3dx8/d3dx8_main.c b/dlls/d3dx8/d3dx8_main.c
index 16c3740e61f..c24aedc74a3 100644
--- a/dlls/d3dx8/d3dx8_main.c
+++ b/dlls/d3dx8/d3dx8_main.c
@@ -30,8 +30,7 @@
 #include "winuser.h"
 #include "wine/debug.h"
 #include "wine/unicode.h"
-#include "d3dx8core.h"
-#include "d3dx8core_private.h"
+#include "d3dx8_private.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
 
diff --git a/dlls/d3dx8/d3dx8core_private.h b/dlls/d3dx8/d3dx8_private.h
similarity index 93%
rename from dlls/d3dx8/d3dx8core_private.h
rename to dlls/d3dx8/d3dx8_private.h
index fb98b38e4ab..63cc91ea5d5 100644
--- a/dlls/d3dx8/d3dx8core_private.h
+++ b/dlls/d3dx8/d3dx8_private.h
@@ -18,14 +18,14 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
-#ifndef __WINE_D3DX8CORE_PRIVATE_H
-#define __WINE_D3DX8CORE_PRIVATE_H
+#ifndef __WINE_D3DX8_PRIVATE_H
+#define __WINE_D3DX8_PRIVATE_H
 
 #include <stdarg.h>
 
 #include "windef.h"
 #include "winbase.h"
-#include "d3dx8core.h"
+#include "d3dx8.h"
 
 /* Interfaces */
 typedef struct ID3DXBufferImpl ID3DXBufferImpl;
@@ -70,4 +70,4 @@ struct ID3DXFontImpl
   /* ID3DXFont fields */
 };
 
-#endif /*__WINE_D3DX8CORE_PRIVATE_H */
+#endif /*__WINE_D3DX8_PRIVATE_H */
diff --git a/dlls/d3dx8/d3dxbuffer.c b/dlls/d3dx8/d3dxbuffer.c
index 369714c36cb..56591c015eb 100644
--- a/dlls/d3dx8/d3dxbuffer.c
+++ b/dlls/d3dx8/d3dxbuffer.c
@@ -31,7 +31,7 @@
 #include "wine/debug.h"
 
 #include "d3d8.h"
-#include "d3dx8core_private.h"
+#include "d3dx8_private.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(d3d);