diff --git a/dlls/ole32/antimoniker.c b/dlls/ole32/antimoniker.c
index 9b021290217..ff2e2870703 100644
--- a/dlls/ole32/antimoniker.c
+++ b/dlls/ole32/antimoniker.c
@@ -540,19 +540,18 @@ static ULONG WINAPI AntiMonikerROTDataImpl_Release(IROTData* iface)
  *        AntiMonikerIROTData_GetComparisonData
  ******************************************************************************/
 static HRESULT WINAPI
-AntiMonikerROTDataImpl_GetComparisonData(IROTData* iface, BYTE* pbData,
-                                          ULONG cbMax, ULONG* pcbData)
+AntiMonikerROTDataImpl_GetComparisonData(IROTData *iface, BYTE *data, ULONG data_len, ULONG *data_req)
 {
-    DWORD constant = 1;
+    AntiMonikerImpl *moniker = impl_from_IROTData(iface);
 
-    TRACE("(%p, %u, %p)\n", pbData, cbMax, pcbData);
+    TRACE("%p, %p, %u, %p.\n", iface, data, data_len, data_req);
 
-    *pcbData = sizeof(CLSID) + sizeof(DWORD);
-    if (cbMax < *pcbData)
+    *data_req = sizeof(CLSID) + sizeof(DWORD);
+    if (data_len < *data_req)
         return E_OUTOFMEMORY;
 
-    memcpy(pbData, &CLSID_AntiMoniker, sizeof(CLSID));
-    memcpy(pbData+sizeof(CLSID), &constant, sizeof(DWORD));
+    memcpy(data, &CLSID_AntiMoniker, sizeof(CLSID));
+    memcpy(data + sizeof(CLSID), &moniker->count, sizeof(moniker->count));
 
     return S_OK;
 }
diff --git a/dlls/ole32/tests/moniker.c b/dlls/ole32/tests/moniker.c
index 65cd279b1a7..5fff7041ef6 100644
--- a/dlls/ole32/tests/moniker.c
+++ b/dlls/ole32/tests/moniker.c
@@ -1412,11 +1412,27 @@ static const BYTE expected_anti_moniker_marshal_data[] =
     0x01,0x00,0x00,0x00,
 };
 
+static const BYTE expected_anti_moniker_marshal_data2[] =
+{
+    0x4d,0x45,0x4f,0x57,0x04,0x00,0x00,0x00,
+    0x0f,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+    0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
+    0x05,0x03,0x00,0x00,0x00,0x00,0x00,0x00,
+    0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
+    0x00,0x00,0x00,0x00,0x14,0x00,0x00,0x00,
+    0x02,0x00,0x00,0x00,
+};
+
 static const BYTE expected_anti_moniker_saved_data[] =
 {
     0x01,0x00,0x00,0x00,
 };
 
+static const BYTE expected_anti_moniker_saved_data2[] =
+{
+    0x02,0x00,0x00,0x00,
+};
+
 static const BYTE expected_anti_moniker_comparison_data[] =
 {
     0x05,0x03,0x00,0x00,0x00,0x00,0x00,0x00,
@@ -1424,6 +1440,13 @@ static const BYTE expected_anti_moniker_comparison_data[] =
     0x01,0x00,0x00,0x00,
 };
 
+static const BYTE expected_anti_moniker_comparison_data2[] =
+{
+    0x05,0x03,0x00,0x00,0x00,0x00,0x00,0x00,
+    0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
+    0x02,0x00,0x00,0x00,
+};
+
 static const BYTE expected_gc_moniker_marshal_data[] =
 {
     0x4d,0x45,0x4f,0x57,0x04,0x00,0x00,0x00,
@@ -2330,6 +2353,12 @@ todo_wine
     hr = IMoniker_Load(moniker, stream);
     ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
 
+    test_moniker("anti moniker 2", moniker,
+        expected_anti_moniker_marshal_data2, sizeof(expected_anti_moniker_marshal_data2),
+        expected_anti_moniker_saved_data2, sizeof(expected_anti_moniker_saved_data2),
+        expected_anti_moniker_comparison_data2, sizeof(expected_anti_moniker_comparison_data2),
+        20, L"\\..\\..");
+
     hr = IMoniker_IsEqual(moniker, moniker2);
     ok(hr == S_FALSE, "Unexpected hr %#x.\n", hr);