diff --git a/reactos/tools/wrc/newstruc.c b/reactos/tools/wrc/newstruc.c
index 9129caa181a..f0774ea1cd3 100644
--- a/reactos/tools/wrc/newstruc.c
+++ b/reactos/tools/wrc/newstruc.c
@@ -325,8 +325,11 @@ static int convert_bitmap(char *data, int size)
 	{
 		type |= FL_SIZEBE | FL_OS2;
 	}
-	else
+	else 
+	{
+		fprintf(stderr, "bisizel %d bosizel %d b4sizel %d\n", bisizel, bosizel, b4sizel);
 		yyerror("Invalid bitmap format, bih->biSize = %ld", bih->biSize);
+	}
 
 	switch(type)
 	{
diff --git a/reactos/tools/wrc/wrc.mak b/reactos/tools/wrc/wrc.mak
index c8ba46bf212..5f3992b1b63 100644
--- a/reactos/tools/wrc/wrc.mak
+++ b/reactos/tools/wrc/wrc.mak
@@ -54,6 +54,9 @@ WRC_OBJECTS = \
 
 WRC_HOST_CFLAGS = -I$(WRC_BASE) $(TOOLS_CFLAGS) \
                   -D__USE_W32API -DWINE_UNICODE_API= \
+		  -DDWORD="unsigned int" -DDWORD_DEFINED \
+		  -DLONG="int" -DULONG="unsigned int" \
+		  -DPULONG="unsigned int *" -DLONG_DEFINED \
                   -Dwchar_t="unsigned short" -D_WCHAR_T_DEFINED \
                   -I$(UNICODE_BASE) -I$(WPP_BASE) \
                   -Iinclude/wine -Iinclude -Iw32api/include
diff --git a/reactos/w32api/include/windef.h b/reactos/w32api/include/windef.h
index 9260130ce56..c22beffa55a 100644
--- a/reactos/w32api/include/windef.h
+++ b/reactos/w32api/include/windef.h
@@ -222,7 +222,11 @@ extern "C" {
 #define _finally __finally
 #endif
 
-typedef unsigned long DWORD;
+#ifndef DWORD_DEFINED
+#define DWORD_DEFINED
+    typedef unsigned long DWORD;
+#endif//DWORD_DEFINED
+
 typedef int WINBOOL,*PWINBOOL,*LPWINBOOL;
 /* FIXME: Is there a good solution to this? */
 #ifndef XFree86Server
diff --git a/reactos/w32api/include/winnt.h b/reactos/w32api/include/winnt.h
index 7b295bc0a88..3e28543a0c7 100644
--- a/reactos/w32api/include/winnt.h
+++ b/reactos/w32api/include/winnt.h
@@ -52,11 +52,14 @@ extern "C" {
 #endif
 typedef char CHAR;
 typedef short SHORT;
-typedef long LONG;
+#ifndef LONG_DEFINED
+#define LONG_DEFINED
+    typedef long LONG;
+    typedef unsigned long ULONG,*PULONG;
+#endif//LONG_DEFINED
 typedef char CCHAR, *PCCHAR;
 typedef unsigned char UCHAR,*PUCHAR;
 typedef unsigned short USHORT,*PUSHORT;
-typedef unsigned long ULONG,*PULONG;
 typedef char *PSZ;
 
 typedef void *PVOID,*LPVOID;