diff --git a/dlls/ole32/tests/moniker.c b/dlls/ole32/tests/moniker.c
index bec5c76caad..8b150738b28 100644
--- a/dlls/ole32/tests/moniker.c
+++ b/dlls/ole32/tests/moniker.c
@@ -1311,6 +1311,13 @@ static const BYTE expected_item_moniker_comparison_data5[] =
       'S',0x00, 'T',0x00,0x00,0x00,
 };
 
+static const BYTE expected_item_moniker_comparison_data6[] =
+{
+     0x04,0x03,0x00,0x00,0x00,0x00,0x00,0x00,
+     0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
+     0x00,0x00,
+};
+
 static const BYTE expected_item_moniker_saved_data[] =
 {
      0x02,0x00,0x00,0x00, '!',0x00,0x05,0x00,
@@ -1341,6 +1348,12 @@ static const BYTE expected_item_moniker_saved_data5[] =
      0x00,0x00,0x00, 'T', 'e', 's', 't',0x00,
 };
 
+static const BYTE expected_item_moniker_saved_data6[] =
+{
+     0x01,0x00,0x00,0x00,0x00,0x01,0x00,0x00,
+     0x00,0x00,
+};
+
 static const BYTE expected_item_moniker_marshal_data[] =
 {
      0x4d,0x45,0x4f,0x57,0x04,0x00,0x00,0x00,
@@ -1401,6 +1414,18 @@ static const BYTE expected_item_moniker_marshal_data5[] =
      0x00,0x00,0x00, 'T', 'e', 's', 't',0x00,
 };
 
+static const BYTE expected_item_moniker_marshal_data6[] =
+{
+     0x4d,0x45,0x4f,0x57,0x04,0x00,0x00,0x00,
+     0x0f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+     0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
+     0x04,0x03,0x00,0x00,0x00,0x00,0x00,0x00,
+     0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
+     0x00,0x00,0x00,0x00,0x22,0x00,0x00,0x00,
+     0x01,0x00,0x00,0x00,0x00,0x01,0x00,0x00,
+     0x00,0x00,
+};
+
 static const BYTE expected_anti_moniker_marshal_data[] =
 {
     0x4d,0x45,0x4f,0x57,0x04,0x00,0x00,0x00,
@@ -2239,6 +2264,18 @@ todo_wine
         IMoniker_Release(moniker);
         IMoniker_Release(moniker2);
     }
+
+    /* Default instance. */
+    hr = CoCreateInstance(&CLSID_ItemMoniker, NULL, CLSCTX_SERVER, &IID_IMoniker, (void **)&moniker);
+    ok(hr == S_OK, "Failed to create item moniker, hr %#x.\n", hr);
+
+    test_moniker("item moniker 6", moniker,
+        expected_item_moniker_marshal_data6, sizeof(expected_item_moniker_marshal_data6),
+        expected_item_moniker_saved_data6, sizeof(expected_item_moniker_saved_data6),
+        expected_item_moniker_comparison_data6, sizeof(expected_item_moniker_comparison_data6),
+        34, L"");
+
+    IMoniker_Release(moniker);
 }
 
 static void stream_write_dword(IStream *stream, DWORD value)