diff --git a/modules/rostests/winetests/user32/cursoricon.c b/modules/rostests/winetests/user32/cursoricon.c
index 5099c08d708..e42875f9256 100644
--- a/modules/rostests/winetests/user32/cursoricon.c
+++ b/modules/rostests/winetests/user32/cursoricon.c
@@ -1053,7 +1053,9 @@ static const DWORD biSize_tests[] = {
     0xffffffff
 };
 
+#ifndef __REACTOS__
 #define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))
+#endif
 
 static void test_LoadImageBitmap(const char * test_desc, HBITMAP hbm)
 {
diff --git a/modules/rostests/winetests/xmllite/reader.c b/modules/rostests/winetests/xmllite/reader.c
index 975724ab189..e8e504a0f51 100644
--- a/modules/rostests/winetests/xmllite/reader.c
+++ b/modules/rostests/winetests/xmllite/reader.c
@@ -32,7 +32,9 @@
 #include "wine/test.h"
 #include "wine/heap.h"
 
+#ifndef __REACTOS__
 #define ARRAY_SIZE(array) (sizeof(array)/sizeof((array)[0]))
+#endif
 
 DEFINE_GUID(IID_IXmlReaderInput, 0x0b3ccc9b, 0x9214, 0x428b, 0xa2, 0xae, 0xef, 0x3a, 0xa8, 0x71, 0xaf, 0xda);