diff --git a/reactos/include/psdk/wingdi.h b/reactos/include/psdk/wingdi.h
index c8b71b71ef3..40fe873fa9b 100644
--- a/reactos/include/psdk/wingdi.h
+++ b/reactos/include/psdk/wingdi.h
@@ -1438,9 +1438,11 @@ typedef struct _devicemodeA {
 #else
     } DUMMYSTRUCTNAME;
 #endif
-    POINTL dmPosition;
-    DWORD  dmDisplayOrientation;
-    DWORD  dmDisplayFixedOutput;
+    struct {
+      POINTL dmPosition;
+      DWORD  dmDisplayOrientation;
+      DWORD  dmDisplayFixedOutput;
+    } DUMMYSTRUCTNAME2;
 #ifdef __WINESRC__
   } DUMMYUNIONNAME1;
 #else
@@ -1497,13 +1499,15 @@ typedef struct _devicemodeW {
 #else
     } DUMMYSTRUCTNAME;
 #endif
-    POINTL dmPosition;
-    DWORD  dmDisplayOrientation;
-    DWORD  dmDisplayFixedOutput;
+    struct {
+      POINTL dmPosition;
+      DWORD  dmDisplayOrientation;
+      DWORD  dmDisplayFixedOutput;
+    } DUMMYSTRUCTNAME2;
 #ifdef __WINESRC__
   } DUMMYUNIONNAME1;
 #else
-  } DUMMYUNIONNAME;
+  } DUMMYUNIONNAME2;
 #endif
 
   short  dmColor;
@@ -1533,7 +1537,7 @@ typedef struct _devicemodeW {
   DWORD  dmPanningHeight;
 #endif
 #endif /* WINVER >= 0x0400 */
-} DEVMODEW,*LPDEVMODEW,*PDEVMODEW;
+} DEVMODEW,*LPDEVMODEW,*PDEVMODEW,*NPDEVMODEW;
 typedef struct tagDIBSECTION {
 	BITMAP dsBm;
 	BITMAPINFOHEADER dsBmih;