diff --git a/dll/directx/wine/d3d9/d3d9_private.h b/dll/directx/wine/d3d9/d3d9_private.h
index ba19e5fb08f..094707a0d16 100644
--- a/dll/directx/wine/d3d9/d3d9_private.h
+++ b/dll/directx/wine/d3d9/d3d9_private.h
@@ -47,8 +47,6 @@
 
 #define D3D9_TEXTURE_MIPMAP_DIRTY 0x1
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 extern const struct wined3d_parent_ops d3d9_null_wined3d_parent_ops DECLSPEC_HIDDEN;
 
 HRESULT vdecl_convert_fvf(DWORD FVF, D3DVERTEXELEMENT9 **ppVertexElements) DECLSPEC_HIDDEN;
diff --git a/dll/directx/wine/d3dx9_36/d3dx9_private.h b/dll/directx/wine/d3dx9_36/d3dx9_private.h
index f5b2b4109c6..7a4d882a8b6 100644
--- a/dll/directx/wine/d3dx9_36/d3dx9_private.h
+++ b/dll/directx/wine/d3dx9_36/d3dx9_private.h
@@ -32,8 +32,6 @@
 
 #define ULONG64_MAX (~(ULONG64)0)
 
-#define ARRAY_SIZE(array) (sizeof(array)/sizeof(*array))
-
 struct vec4
 {
     float x, y, z, w;
diff --git a/dll/directx/wine/ddraw/ddraw_private.h b/dll/directx/wine/ddraw/ddraw_private.h
index 1454e8012a4..cac38c57e92 100644
--- a/dll/directx/wine/ddraw/ddraw_private.h
+++ b/dll/directx/wine/ddraw/ddraw_private.h
@@ -39,8 +39,6 @@
 #include "wine/list.h"
 #include "wine/wined3d.h"
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 extern const struct wined3d_parent_ops ddraw_null_wined3d_parent_ops DECLSPEC_HIDDEN;
 extern DWORD force_refresh_rate DECLSPEC_HIDDEN;
 
diff --git a/dll/win32/avifil32/avifile_private.h b/dll/win32/avifil32/avifile_private.h
index 83e87ea989d..4bf11f42a8c 100644
--- a/dll/win32/avifil32/avifile_private.h
+++ b/dll/win32/avifil32/avifile_private.h
@@ -22,8 +22,6 @@
 #include <windef.h>
 #include <winuser.h>
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 #ifndef MAX_AVISTREAMS
 #define MAX_AVISTREAMS 8
 #endif
diff --git a/dll/win32/comctl32/comctl32.h b/dll/win32/comctl32/comctl32.h
index 083c3760fc7..4274697e11a 100644
--- a/dll/win32/comctl32/comctl32.h
+++ b/dll/win32/comctl32/comctl32.h
@@ -45,8 +45,6 @@
 extern HMODULE COMCTL32_hModule DECLSPEC_HIDDEN;
 extern HBRUSH  COMCTL32_hPattern55AABrush DECLSPEC_HIDDEN;
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 /* Property sheet / Wizard */
 #define IDD_PROPSHEET 1006
 #define IDD_WIZARD    1020
diff --git a/dll/win32/comdlg32/cdlg.h b/dll/win32/comdlg32/cdlg.h
index eebf1a9b2b1..28bb7e75268 100644
--- a/dll/win32/comdlg32/cdlg.h
+++ b/dll/win32/comdlg32/cdlg.h
@@ -23,8 +23,6 @@
 
 #include "dlgs.h"
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 /* Common dialogs implementation globals */
 #define COMDLG32_Atom   MAKEINTATOM(0xa000)     /* MS uses this one to identify props */
 
diff --git a/dll/win32/gdiplus/gdiplus_private.h b/dll/win32/gdiplus/gdiplus_private.h
index 25b269ba351..b2e4f1e93f3 100644
--- a/dll/win32/gdiplus/gdiplus_private.h
+++ b/dll/win32/gdiplus/gdiplus_private.h
@@ -35,8 +35,6 @@
 
 #include "gdiplus.h"
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 #define GP_DEFAULT_PENSTYLE (PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT | PS_JOIN_MITER)
 #define MAX_ARC_PTS (13)
 #define MAX_DASHLEN (16) /* this is a limitation of gdi */
diff --git a/dll/win32/msi/tokenize.c b/dll/win32/msi/tokenize.c
index 1656fd8c3dd..d1c2da97439 100644
--- a/dll/win32/msi/tokenize.c
+++ b/dll/win32/msi/tokenize.c
@@ -77,8 +77,6 @@ static const WCHAR updateW[] = {'U','P','D','A','T','E'};
 static const WCHAR valuesW[] = {'V','A','L','U','E','S'};
 static const WCHAR whereW[] = {'W','H','E','R','E'};
 
-#define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0]))
-
 /*
 ** These are the keywords
 ** They MUST be in alphabetical order
diff --git a/dll/win32/msxml3/msxml_private.h b/dll/win32/msxml3/msxml_private.h
index d7039275cef..94ef66b23d8 100644
--- a/dll/win32/msxml3/msxml_private.h
+++ b/dll/win32/msxml3/msxml_private.h
@@ -31,8 +31,6 @@
 # error You must include config.h to use this header
 #endif
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 typedef enum {
     MSXML_DEFAULT = 0,
     MSXML2        = 20,
diff --git a/dll/win32/scrrun/scrrun_private.h b/dll/win32/scrrun/scrrun_private.h
index d9ff2416a54..5083d30a8ea 100644
--- a/dll/win32/scrrun/scrrun_private.h
+++ b/dll/win32/scrrun/scrrun_private.h
@@ -18,8 +18,6 @@
 #ifndef _SCRRUN_PRIVATE_H_
 #define _SCRRUN_PRIVATE_H_
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 extern HRESULT WINAPI FileSystem_CreateInstance(IClassFactory*,IUnknown*,REFIID,void**) DECLSPEC_HIDDEN;
 extern HRESULT WINAPI Dictionary_CreateInstance(IClassFactory*,IUnknown*,REFIID,void**) DECLSPEC_HIDDEN;
 
diff --git a/dll/win32/wshom.ocx/wshom_private.h b/dll/win32/wshom.ocx/wshom_private.h
index a3fa3b0f88e..951599fbdbd 100644
--- a/dll/win32/wshom.ocx/wshom_private.h
+++ b/dll/win32/wshom.ocx/wshom_private.h
@@ -27,8 +27,6 @@
 #include "ole2.h"
 #include "olectl.h"
 
-#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
-
 /* typelibs */
 typedef enum tid_t {
     NULL_tid,
diff --git a/dll/win32/xmllite/xmllite_private.h b/dll/win32/xmllite/xmllite_private.h
index 381dec496c8..7884e27453d 100644
--- a/dll/win32/xmllite/xmllite_private.h
+++ b/dll/win32/xmllite/xmllite_private.h
@@ -23,8 +23,6 @@
 
 #include "wine/heap.h"
 
-#define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0]))
-
 static inline void *m_alloc(IMalloc *imalloc, size_t len)
 {
     if (imalloc)
diff --git a/sdk/include/xdk/winnt_old.h b/sdk/include/xdk/winnt_old.h
index 59076df80d3..07c811837f3 100644
--- a/sdk/include/xdk/winnt_old.h
+++ b/sdk/include/xdk/winnt_old.h
@@ -4308,6 +4308,10 @@ typedef struct _TP_CALLBACK_ENVIRON_V1 {
 } TP_CALLBACK_ENVIRON_V1, TP_CALLBACK_ENVIRON, *PTP_CALLBACK_ENVIRON;
 #endif /* (_WIN32_WINNT >= _WIN32_WINNT_WIN7) */
 
+#ifdef __WINESRC__
+# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+#endif
+
 #ifdef _MSC_VER
 #pragma warning(pop)
 #endif