diff --git a/dlls/d3drm/d3drm.c b/dlls/d3drm/d3drm.c
index abeed11dc6f..c7c28b9703d 100644
--- a/dlls/d3drm/d3drm.c
+++ b/dlls/d3drm/d3drm.c
@@ -22,11 +22,8 @@
 
 #include "wine/debug.h"
 
-#define COBJMACROS
-
 #include "winbase.h"
 #include "wingdi.h"
-#include "dxfile.h"
 #include "rmxfguid.h"
 
 #include "d3drm_private.h"
diff --git a/dlls/d3drm/d3drm_private.h b/dlls/d3drm/d3drm_private.h
index 49e4af14eaa..1aa0a98b8d6 100644
--- a/dlls/d3drm/d3drm_private.h
+++ b/dlls/d3drm/d3drm_private.h
@@ -21,6 +21,7 @@
 #ifndef __D3DRM_PRIVATE_INCLUDED__
 #define __D3DRM_PRIVATE_INCLUDED__
 
+#define COBJMACROS
 #include <math.h>
 #include "d3drm.h"
 #include "dxfile.h"
diff --git a/dlls/d3drm/device.c b/dlls/d3drm/device.c
index ef83de0a847..c970244abe1 100644
--- a/dlls/d3drm/device.c
+++ b/dlls/d3drm/device.c
@@ -21,8 +21,6 @@
 #include <assert.h>
 #include "wine/debug.h"
 
-#define COBJMACROS
-
 #include "winbase.h"
 #include "wingdi.h"
 
diff --git a/dlls/d3drm/face.c b/dlls/d3drm/face.c
index e9e7e9a65b4..1fac0bae800 100644
--- a/dlls/d3drm/face.c
+++ b/dlls/d3drm/face.c
@@ -20,8 +20,6 @@
 
 #include "wine/debug.h"
 
-#define COBJMACROS
-
 #include "winbase.h"
 #include "wingdi.h"
 
diff --git a/dlls/d3drm/frame.c b/dlls/d3drm/frame.c
index 39b2f87d71d..861002aecb5 100644
--- a/dlls/d3drm/frame.c
+++ b/dlls/d3drm/frame.c
@@ -22,8 +22,6 @@
 #include <assert.h>
 #include "wine/debug.h"
 
-#define COBJMACROS
-
 #include "winbase.h"
 #include "wingdi.h"
 
diff --git a/dlls/d3drm/light.c b/dlls/d3drm/light.c
index 7a7ccd46a03..8d59984b457 100644
--- a/dlls/d3drm/light.c
+++ b/dlls/d3drm/light.c
@@ -20,8 +20,6 @@
 
 #include "wine/debug.h"
 
-#define COBJMACROS
-
 #include "winbase.h"
 #include "wingdi.h"
 
diff --git a/dlls/d3drm/material.c b/dlls/d3drm/material.c
index 8eb40b5a9e9..137ecfef95d 100644
--- a/dlls/d3drm/material.c
+++ b/dlls/d3drm/material.c
@@ -20,8 +20,6 @@
 
 #include "wine/debug.h"
 
-#define COBJMACROS
-
 #include "winbase.h"
 #include "wingdi.h"
 
diff --git a/dlls/d3drm/meshbuilder.c b/dlls/d3drm/meshbuilder.c
index 0028f123108..20c0346b12c 100644
--- a/dlls/d3drm/meshbuilder.c
+++ b/dlls/d3drm/meshbuilder.c
@@ -21,13 +21,10 @@
 
 #define NONAMELESSUNION
 
-#define COBJMACROS
-
 #include "wine/debug.h"
 
 #include "winbase.h"
 #include "wingdi.h"
-#include "dxfile.h"
 #include "rmxfguid.h"
 
 #include "d3drm_private.h"
diff --git a/dlls/d3drm/texture.c b/dlls/d3drm/texture.c
index 6c622b6bcf0..5272223e98d 100644
--- a/dlls/d3drm/texture.c
+++ b/dlls/d3drm/texture.c
@@ -20,8 +20,6 @@
 
 #include "wine/debug.h"
 
-#define COBJMACROS
-
 #include "winbase.h"
 #include "wingdi.h"
 
diff --git a/dlls/d3drm/viewport.c b/dlls/d3drm/viewport.c
index 9bb8cfc573b..2a1d0353240 100644
--- a/dlls/d3drm/viewport.c
+++ b/dlls/d3drm/viewport.c
@@ -20,8 +20,6 @@
 
 #include "wine/debug.h"
 
-#define COBJMACROS
-
 #include "winbase.h"
 #include "wingdi.h"