diff --git a/dlls/mshtml/htmlstylesheet.c b/dlls/mshtml/htmlstylesheet.c
index e0c74bcf8b6..4b4308238a4 100644
--- a/dlls/mshtml/htmlstylesheet.c
+++ b/dlls/mshtml/htmlstylesheet.c
@@ -32,6 +32,7 @@
 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
 
 struct HTMLStyleSheet {
+    DispatchEx dispex;
     IHTMLStyleSheet IHTMLStyleSheet_iface;
 
     LONG ref;
@@ -412,6 +413,8 @@ static HRESULT WINAPI HTMLStyleSheet_QueryInterface(IHTMLStyleSheet *iface, REFI
     }else if(IsEqualGUID(&IID_IHTMLStyleSheet, riid)) {
         TRACE("(%p)->(IID_IHTMLStyleSheet %p)\n", This, ppv);
         *ppv = &This->IHTMLStyleSheet_iface;
+    }else if(dispex_query_interface(&This->dispex, riid, ppv)) {
+        return *ppv ? S_OK : E_NOINTERFACE;
     }
 
     if(*ppv) {
@@ -449,16 +452,16 @@ static ULONG WINAPI HTMLStyleSheet_Release(IHTMLStyleSheet *iface)
 static HRESULT WINAPI HTMLStyleSheet_GetTypeInfoCount(IHTMLStyleSheet *iface, UINT *pctinfo)
 {
     HTMLStyleSheet *This = impl_from_IHTMLStyleSheet(iface);
-    FIXME("(%p)->(%p)\n", This, pctinfo);
-    return E_NOTIMPL;
+    TRACE("(%p)->(%p)\n", This, pctinfo);
+    return IDispatchEx_GetTypeInfoCount(&This->dispex.IDispatchEx_iface, pctinfo);
 }
 
 static HRESULT WINAPI HTMLStyleSheet_GetTypeInfo(IHTMLStyleSheet *iface, UINT iTInfo,
                                               LCID lcid, ITypeInfo **ppTInfo)
 {
     HTMLStyleSheet *This = impl_from_IHTMLStyleSheet(iface);
-    FIXME("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
-    return E_NOTIMPL;
+    TRACE("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
+    return IDispatchEx_GetTypeInfo(&This->dispex.IDispatchEx_iface, iTInfo, lcid, ppTInfo);
 }
 
 static HRESULT WINAPI HTMLStyleSheet_GetIDsOfNames(IHTMLStyleSheet *iface, REFIID riid,
@@ -466,9 +469,8 @@ static HRESULT WINAPI HTMLStyleSheet_GetIDsOfNames(IHTMLStyleSheet *iface, REFII
                                                 LCID lcid, DISPID *rgDispId)
 {
     HTMLStyleSheet *This = impl_from_IHTMLStyleSheet(iface);
-    FIXME("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
-          lcid, rgDispId);
-    return E_NOTIMPL;
+    TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames, lcid, rgDispId);
+    return IDispatchEx_GetIDsOfNames(&This->dispex.IDispatchEx_iface, riid, rgszNames, cNames, lcid, rgDispId);
 }
 
 static HRESULT WINAPI HTMLStyleSheet_Invoke(IHTMLStyleSheet *iface, DISPID dispIdMember,
@@ -476,9 +478,10 @@ static HRESULT WINAPI HTMLStyleSheet_Invoke(IHTMLStyleSheet *iface, DISPID dispI
                             VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
 {
     HTMLStyleSheet *This = impl_from_IHTMLStyleSheet(iface);
-    FIXME("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
+    TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
           lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
-    return E_NOTIMPL;
+    return IDispatchEx_Invoke(&This->dispex.IDispatchEx_iface, dispIdMember, riid, lcid, wFlags, pDispParams,
+            pVarResult, pExcepInfo, puArgErr);
 }
 
 static HRESULT WINAPI HTMLStyleSheet_put_title(IHTMLStyleSheet *iface, BSTR v)
@@ -676,6 +679,17 @@ static const IHTMLStyleSheetVtbl HTMLStyleSheetVtbl = {
     HTMLStyleSheet_get_rules
 };
 
+static const tid_t HTMLStyleSheet_iface_tids[] = {
+    IHTMLStyleSheet_tid,
+    0
+};
+static dispex_static_data_t HTMLStyleSheet_dispex = {
+    NULL,
+    DispHTMLStyleSheet_tid,
+    NULL,
+    HTMLStyleSheet_iface_tids
+};
+
 IHTMLStyleSheet *HTMLStyleSheet_Create(nsIDOMStyleSheet *nsstylesheet)
 {
     HTMLStyleSheet *ret = heap_alloc(sizeof(HTMLStyleSheet));
@@ -685,6 +699,8 @@ IHTMLStyleSheet *HTMLStyleSheet_Create(nsIDOMStyleSheet *nsstylesheet)
     ret->ref = 1;
     ret->nsstylesheet = NULL;
 
+    init_dispex(&ret->dispex, (IUnknown*)&ret->IHTMLStyleSheet_iface, &HTMLStyleSheet_dispex);
+
     if(nsstylesheet) {
         nsres = nsIDOMStyleSheet_QueryInterface(nsstylesheet, &IID_nsIDOMCSSStyleSheet,
                 (void**)&ret->nsstylesheet);
diff --git a/dlls/mshtml/mshtml_private.h b/dlls/mshtml/mshtml_private.h
index 0bbdb9d0417..8063ac58b3a 100644
--- a/dlls/mshtml/mshtml_private.h
+++ b/dlls/mshtml/mshtml_private.h
@@ -106,6 +106,7 @@ typedef struct event_target_t event_target_t;
     XDIID(DispHTMLSelectElement) \
     XDIID(DispHTMLStyle) \
     XDIID(DispHTMLStyleElement) \
+    XDIID(DispHTMLStyleSheet) \
     XDIID(DispHTMLStyleSheetsCollection) \
     XDIID(DispHTMLTable) \
     XDIID(DispHTMLTableCell) \
@@ -178,6 +179,7 @@ typedef struct event_target_t event_target_t;
     XIID(IHTMLStyle5) \
     XIID(IHTMLStyle6) \
     XIID(IHTMLStyleElement) \
+    XIID(IHTMLStyleSheet) \
     XIID(IHTMLStyleSheetsCollection) \
     XIID(IHTMLTable) \
     XIID(IHTMLTable2) \
diff --git a/dlls/mshtml/tests/dom.c b/dlls/mshtml/tests/dom.c
index 8d3b9516259..7abd19b6f65 100644
--- a/dlls/mshtml/tests/dom.c
+++ b/dlls/mshtml/tests/dom.c
@@ -5839,6 +5839,8 @@ static void test_stylesheet(IDispatch *disp)
     IHTMLStyleSheet *stylesheet;
     HRESULT hres;
 
+    test_disp2((IUnknown*)disp, &DIID_DispHTMLStyleSheet, &IID_IHTMLStyleSheet, "[object]");
+
     hres = IDispatch_QueryInterface(disp, &IID_IHTMLStyleSheet, (void**)&stylesheet);
     ok(hres == S_OK, "Could not get IHTMLStyleSheet: %08x\n", hres);