diff --git a/dlls/mshtml/persist.c b/dlls/mshtml/persist.c
index a4a190c90be..2735ab570f0 100644
--- a/dlls/mshtml/persist.c
+++ b/dlls/mshtml/persist.c
@@ -876,7 +876,7 @@ static HRESULT WINAPI PersistStreamInit_IsDirty(IPersistStreamInit *iface)
     return S_FALSE;
 }
 
-static HRESULT WINAPI PersistStreamInit_Load(IPersistStreamInit *iface, LPSTREAM pStm)
+static HRESULT WINAPI PersistStreamInit_Load(IPersistStreamInit *iface, IStream *pStm)
 {
     HTMLDocument *This = impl_from_IPersistStreamInit(iface);
     IMoniker *mon;
@@ -900,7 +900,7 @@ static HRESULT WINAPI PersistStreamInit_Load(IPersistStreamInit *iface, LPSTREAM
     return hres;
 }
 
-static HRESULT WINAPI PersistStreamInit_Save(IPersistStreamInit *iface, LPSTREAM pStm,
+static HRESULT WINAPI PersistStreamInit_Save(IPersistStreamInit *iface, IStream *pStm,
                                              BOOL fClearDirty)
 {
     HTMLDocument *This = impl_from_IPersistStreamInit(iface);
diff --git a/dlls/mshtml/view.c b/dlls/mshtml/view.c
index 8ca3caf03a1..4470a4348ea 100644
--- a/dlls/mshtml/view.c
+++ b/dlls/mshtml/view.c
@@ -697,14 +697,14 @@ static HRESULT WINAPI OleDocumentView_CloseView(IOleDocumentView *iface, DWORD d
     return S_OK;
 }
 
-static HRESULT WINAPI OleDocumentView_SaveViewState(IOleDocumentView *iface, LPSTREAM pstm)
+static HRESULT WINAPI OleDocumentView_SaveViewState(IOleDocumentView *iface, IStream *pstm)
 {
     HTMLDocument *This = impl_from_IOleDocumentView(iface);
     FIXME("(%p)->(%p)\n", This, pstm);
     return E_NOTIMPL;
 }
 
-static HRESULT WINAPI OleDocumentView_ApplyViewState(IOleDocumentView *iface, LPSTREAM pstm)
+static HRESULT WINAPI OleDocumentView_ApplyViewState(IOleDocumentView *iface, IStream *pstm)
 {
     HTMLDocument *This = impl_from_IOleDocumentView(iface);
     FIXME("(%p)->(%p)\n", This, pstm);