diff --git a/dlls/dmcompos/chordmap.c b/dlls/dmcompos/chordmap.c
index e131cf6e575..fae1771b940 100644
--- a/dlls/dmcompos/chordmap.c
+++ b/dlls/dmcompos/chordmap.c
@@ -145,12 +145,12 @@ static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_GetDescriptor
 static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_SetDescriptor (LPDIRECTMUSICOBJECT iface, LPDMUS_OBJECTDESC pDesc) {
 	ICOM_THIS_MULTI(IDirectMusicChordMapImpl, ObjectVtbl, iface);
 	TRACE("(%p, %p): setting descriptor:\n%s\n", This, pDesc, debugstr_DMUS_OBJECTDESC (pDesc));
-	
+
 	/* According to MSDN, we should copy only given values, not whole struct */	
 	if (pDesc->dwValidData & DMUS_OBJ_OBJECT)
-		memcpy (&This->pDesc->guidObject, &pDesc->guidObject, sizeof (pDesc->guidObject));
+		This->pDesc->guidObject = pDesc->guidObject;
 	if (pDesc->dwValidData & DMUS_OBJ_CLASS)
-		memcpy (&This->pDesc->guidClass, &pDesc->guidClass, sizeof (pDesc->guidClass));		
+		This->pDesc->guidClass = pDesc->guidClass;
 	if (pDesc->dwValidData & DMUS_OBJ_NAME)
 		lstrcpynW (This->pDesc->wszName, pDesc->wszName, DMUS_MAX_NAME);
 	if (pDesc->dwValidData & DMUS_OBJ_CATEGORY)
@@ -158,11 +158,11 @@ static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_SetDescriptor
 	if (pDesc->dwValidData & DMUS_OBJ_FILENAME)
 		lstrcpynW (This->pDesc->wszFileName, pDesc->wszFileName, DMUS_MAX_FILENAME);
 	if (pDesc->dwValidData & DMUS_OBJ_VERSION)
-		memcpy (&This->pDesc->vVersion, &pDesc->vVersion, sizeof (pDesc->vVersion));				
+		This->pDesc->vVersion = pDesc->vVersion;
 	if (pDesc->dwValidData & DMUS_OBJ_DATE)
-		memcpy (&This->pDesc->ftDate, &pDesc->ftDate, sizeof (pDesc->ftDate));				
+		This->pDesc->ftDate = pDesc->ftDate;
 	if (pDesc->dwValidData & DMUS_OBJ_MEMORY) {
-		memcpy (&This->pDesc->llMemLength, &pDesc->llMemLength, sizeof (pDesc->llMemLength));				
+		This->pDesc->llMemLength = pDesc->llMemLength;
 		memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof (pDesc->pbMemData));
 	}
 	if (pDesc->dwValidData & DMUS_OBJ_STREAM) {
@@ -182,11 +182,11 @@ static HRESULT WINAPI IDirectMusicChordMapImpl_IDirectMusicObject_ParseDescripto
 	LARGE_INTEGER liMove; /* used when skipping chunks */
 
 	TRACE("(%p, %p)\n", pStream, pDesc);
-	
+
 	/* FIXME: should this be determined from stream? */
 	pDesc->dwValidData |= DMUS_OBJ_CLASS;
-	memcpy (&pDesc->guidClass, &CLSID_DirectMusicChordMap, sizeof(CLSID));
-	
+	pDesc->guidClass = CLSID_DirectMusicChordMap;
+
 	IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 	TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 	switch (Chunk.fccID) {	
@@ -539,8 +539,8 @@ HRESULT WINAPI DMUSIC_CreateDirectMusicChordMapImpl (LPCGUID lpcGUID, LPVOID* pp
 	obj->pDesc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_OBJECTDESC));
 	DM_STRUCT_INIT(obj->pDesc);
 	obj->pDesc->dwValidData |= DMUS_OBJ_CLASS;
-	memcpy (&obj->pDesc->guidClass, &CLSID_DirectMusicChordMap, sizeof (CLSID));
+	obj->pDesc->guidClass = CLSID_DirectMusicChordMap;
 	obj->ref = 0; /* will be inited by QueryInterface */
-	
+
 	return IDirectMusicChordMapImpl_IUnknown_QueryInterface ((LPUNKNOWN)&obj->UnknownVtbl, lpcGUID, ppobj);
 }
diff --git a/dlls/dmcompos/chordmaptrack.c b/dlls/dmcompos/chordmaptrack.c
index cd65797fab1..5fa462d1e16 100644
--- a/dlls/dmcompos/chordmaptrack.c
+++ b/dlls/dmcompos/chordmaptrack.c
@@ -283,8 +283,8 @@ HRESULT WINAPI DMUSIC_CreateDirectMusicChordMapTrack (LPCGUID lpcGUID, LPVOID *p
 	track->pDesc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_OBJECTDESC));
 	DM_STRUCT_INIT(track->pDesc);
 	track->pDesc->dwValidData |= DMUS_OBJ_CLASS;
-	memcpy (&track->pDesc->guidClass, &CLSID_DirectMusicChordMapTrack, sizeof (CLSID));
+	track->pDesc->guidClass = CLSID_DirectMusicChordMapTrack;
 	track->ref = 0; /* will be inited by QueryInterface */
-	
+
 	return IDirectMusicChordMapTrack_IUnknown_QueryInterface ((LPUNKNOWN)&track->UnknownVtbl, lpcGUID, ppobj);
 }
diff --git a/dlls/dmcompos/signposttrack.c b/dlls/dmcompos/signposttrack.c
index 954959f2b63..bcea8942563 100644
--- a/dlls/dmcompos/signposttrack.c
+++ b/dlls/dmcompos/signposttrack.c
@@ -281,8 +281,8 @@ HRESULT WINAPI DMUSIC_CreateDirectMusicSignPostTrack (LPCGUID lpcGUID, LPVOID *p
 	track->pDesc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_OBJECTDESC));
 	DM_STRUCT_INIT(track->pDesc);
 	track->pDesc->dwValidData |= DMUS_OBJ_CLASS;
-	memcpy (&track->pDesc->guidClass, &CLSID_DirectMusicSignPostTrack, sizeof (CLSID));
+	track->pDesc->guidClass = CLSID_DirectMusicSignPostTrack;
 	track->ref = 0; /* will be inited by QueryInterface */
-	
+
 	return IDirectMusicSignPostTrack_IUnknown_QueryInterface ((LPUNKNOWN)&track->UnknownVtbl, lpcGUID, ppobj);
 }