diff --git a/dlls/mshtml/htmldoc.c b/dlls/mshtml/htmldoc.c
index 57d4fc6e517..84f6cc81d97 100644
--- a/dlls/mshtml/htmldoc.c
+++ b/dlls/mshtml/htmldoc.c
@@ -1748,6 +1748,9 @@ static BOOL htmldoc_qi(HTMLDocument *This, REFIID riid, void **ppv)
     }else if(IsEqualGUID(&IID_IMarshal, riid)) {
         TRACE("(%p)->(IID_IMarshal %p) returning NULL\n", This, ppv);
         *ppv = NULL;
+    }else if(IsEqualGUID(&IID_IObjectWithSite, riid)) {
+        TRACE("(%p)->(IID_IObjectWithSite %p)\n", This, ppv);
+        *ppv = OBJSITE(This);
     }else {
         return FALSE;
     }
diff --git a/dlls/mshtml/mshtml_private.h b/dlls/mshtml/mshtml_private.h
index afd0bff74b7..98abec268aa 100644
--- a/dlls/mshtml/mshtml_private.h
+++ b/dlls/mshtml/mshtml_private.h
@@ -323,6 +323,7 @@ struct HTMLDocument {
     const IPersistStreamInitVtbl          *lpPersistStreamInitVtbl;
     const IDispatchExVtbl                 *lpIDispatchExVtbl;
     const ISupportErrorInfoVtbl           *lpSupportErrorInfoVtbl;
+    const IObjectWithSiteVtbl             *lpObjectWithSiteVtbl;
 
     IUnknown *unk_impl;
     IDispatchEx *dispex;
@@ -577,6 +578,7 @@ struct HTMLDocumentNode {
 #define PERSTRINIT(x)    ((IPersistStreamInit*)           &(x)->lpPersistStreamInitVtbl)
 #define PERSISTHIST(x)   ((IPersistHistory*)              &(x)->lpPersistHistoryVtbl)
 #define CUSTOMDOC(x)     ((ICustomDoc*)                   &(x)->lpCustomDocVtbl)
+#define OBJSITE(x)       ((IObjectWithSite*)              &(x)->lpObjectWithSiteVtbl)
 
 #define NSWBCHROME(x)    ((nsIWebBrowserChrome*)          &(x)->lpWebBrowserChromeVtbl)
 #define NSCML(x)         ((nsIContextMenuListener*)       &(x)->lpContextMenuListenerVtbl)
diff --git a/dlls/mshtml/oleobj.c b/dlls/mshtml/oleobj.c
index 872d766489d..3dec3dc62dd 100644
--- a/dlls/mshtml/oleobj.c
+++ b/dlls/mshtml/oleobj.c
@@ -732,6 +732,54 @@ static const IOleControlVtbl OleControlVtbl = {
     OleControl_FreezeEvents
 };
 
+/**********************************************************
+ * IObjectWithSite implementation
+ */
+
+#define OBJSITE_THIS(iface) DEFINE_THIS(HTMLDocument, ObjectWithSite, iface)
+
+static HRESULT WINAPI ObjectWithSite_QueryInterface(IObjectWithSite *iface, REFIID riid, void **ppvObject)
+{
+    HTMLDocument *This = OBJSITE_THIS(iface);
+    return IHTMLDocument2_QueryInterface(HTMLDOC(This), riid, ppvObject);
+}
+
+static ULONG WINAPI ObjectWithSite_AddRef(IObjectWithSite *iface)
+{
+    HTMLDocument *This = OBJSITE_THIS(iface);
+    return IHTMLDocument2_AddRef(HTMLDOC(This));
+}
+
+static ULONG WINAPI ObjectWithSite_Release(IObjectWithSite *iface)
+{
+    HTMLDocument *This = OBJSITE_THIS(iface);
+    return IHTMLDocument2_Release(HTMLDOC(This));
+}
+
+static HRESULT WINAPI ObjectWithSite_SetSite(IObjectWithSite *iface, IUnknown *pUnkSite)
+{
+    HTMLDocument *This = OBJSITE_THIS(iface);
+    FIXME("(%p)->(%p)\n", This, pUnkSite);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ObjectWithSite_GetSite(IObjectWithSite* iface, REFIID riid, PVOID *ppvSite)
+{
+    HTMLDocument *This = OBJSITE_THIS(iface);
+    FIXME("(%p)->(%p)\n", This, ppvSite);
+    return E_NOTIMPL;
+}
+
+#undef OBJSITE_THIS
+
+static const IObjectWithSiteVtbl ObjectWithSiteVtbl = {
+    ObjectWithSite_QueryInterface,
+    ObjectWithSite_AddRef,
+    ObjectWithSite_Release,
+    ObjectWithSite_SetSite,
+    ObjectWithSite_GetSite
+};
+
 void HTMLDocument_LockContainer(HTMLDocumentObj *This, BOOL fLock)
 {
     IOleContainer *container;
@@ -753,4 +801,5 @@ void HTMLDocument_OleObj_Init(HTMLDocument *This)
     This->lpOleObjectVtbl = &OleObjectVtbl;
     This->lpOleDocumentVtbl = &OleDocumentVtbl;
     This->lpOleControlVtbl = &OleControlVtbl;
+    This->lpObjectWithSiteVtbl = &ObjectWithSiteVtbl;
 }