diff --git a/dlls/kernel/tests/file.c b/dlls/kernel/tests/file.c
index e3506a91003..a0ac890e4be 100644
--- a/dlls/kernel/tests/file.c
+++ b/dlls/kernel/tests/file.c
@@ -1308,11 +1308,11 @@ static void test_MapFile(void)
     ok( hmap == NULL, "mapped zero size file\n");
     ok( GetLastError() == ERROR_FILE_INVALID, "not ERROR_FILE_INVALID\n");
 
-    hmap = CreateFileMapping( handle, NULL, PAGE_READWRITE, 0x1000, 0, NULL );
+    hmap = CreateFileMapping( handle, NULL, PAGE_READWRITE, 0x80000000, 0, NULL );
     ok( hmap == NULL, "mapping should fail\n");
     /* GetLastError() varies between win9x and WinNT and also depends on the filesystem */
 
-    hmap = CreateFileMapping( handle, NULL, PAGE_READWRITE, 0x1000, 0x10000, NULL );
+    hmap = CreateFileMapping( handle, NULL, PAGE_READWRITE, 0x80000000, 0x10000, NULL );
     ok( hmap == NULL, "mapping should fail\n");
     /* GetLastError() varies between win9x and WinNT and also depends on the filesystem */