diff --git a/dlls/itss/moniker.c b/dlls/itss/moniker.c
index d57f38167b6..41e2bdaad86 100644
--- a/dlls/itss/moniker.c
+++ b/dlls/itss/moniker.c
@@ -99,7 +99,7 @@ static HRESULT WINAPI ITS_IMonikerImpl_GetClassID(
     ITS_IMonikerImpl *This = (ITS_IMonikerImpl *)iface;
 
     TRACE("%p %p\n", This, pClassID);
-    memcpy( pClassID, &CLSID_ITStorage, sizeof (CLSID) );
+    *pClassID = CLSID_ITStorage;
     return S_OK;
 }
 
diff --git a/dlls/itss/protocol.c b/dlls/itss/protocol.c
index 85711745dfe..c2277e2c210 100644
--- a/dlls/itss/protocol.c
+++ b/dlls/itss/protocol.c
@@ -234,7 +234,7 @@ static HRESULT WINAPI ITSProtocol_Start(IInternetProtocol *iface, LPCWSTR szUrl,
 
     release_chm(This); /* Native leaks handle here */
     This->chm_file = chm_file;
-    memcpy(&This->chm_object, &chm_object, sizeof(chm_object));
+    This->chm_object = chm_object;
 
     hres = IInternetProtocolSink_ReportData(pOIProtSink,
             BSCF_FIRSTDATANOTIFICATION|BSCF_DATAFULLYAVAILABLE,
diff --git a/dlls/itss/storage.c b/dlls/itss/storage.c
index 97d7755826a..de0acfaee3e 100644
--- a/dlls/itss/storage.c
+++ b/dlls/itss/storage.c
@@ -445,7 +445,7 @@ static int ITSS_chm_enumerator(
     TRACE("adding %s to enumeration\n", debugstr_w(ui->path) );
 
     info = HeapAlloc( GetProcessHeap(), 0, sizeof (struct enum_info) );
-    memcpy( &info->ui, ui, sizeof info->ui );
+    info->ui = *ui;
 
     info->next = NULL;
     info->prev = stgenum->last;
@@ -788,7 +788,7 @@ static HRESULT WINAPI ITSS_IStream_Stat(
     pstatstg->type = STGTY_STREAM;
     pstatstg->cbSize.QuadPart = This->ui.length;
     pstatstg->grfMode = STGM_READ;
-    memcpy( &pstatstg->clsid, &CLSID_ITStorage, sizeof (CLSID) );
+    pstatstg->clsid = CLSID_ITStorage;
 
     return S_OK;
 }
@@ -828,7 +828,7 @@ static IStream_Impl *ITSS_create_stream(
     stm->vtbl_IStream = &ITSS_IStream_vtbl;
     stm->ref = 1;
     stm->addr = 0;
-    memcpy( &stm->ui, ui, sizeof stm->ui );
+    stm->ui = *ui;
     stm->stg = stg;
     IStorage_AddRef( (IStorage*) stg );