diff --git a/dlls/dsound/buffer.c b/dlls/dsound/buffer.c
index e85a5d1f853..1cdc388c79d 100644
--- a/dlls/dsound/buffer.c
+++ b/dlls/dsound/buffer.c
@@ -1229,7 +1229,7 @@ static HRESULT WINAPI IKsPropertySetImpl_QueryInterface(IKsPropertySet *iface, R
 
     TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);
 
-    return IDirectSoundBuffer_QueryInterface(&This->IDirectSoundBuffer8_iface, riid, ppobj);
+    return IDirectSoundBuffer8_QueryInterface(&This->IDirectSoundBuffer8_iface, riid, ppobj);
 }
 
 static ULONG WINAPI IKsPropertySetImpl_AddRef(IKsPropertySet *iface)
diff --git a/dlls/dsound/capture.c b/dlls/dsound/capture.c
index 30870ae6ba5..fcc363d7d6a 100644
--- a/dlls/dsound/capture.c
+++ b/dlls/dsound/capture.c
@@ -129,7 +129,7 @@ static HRESULT WINAPI IDirectSoundNotifyImpl_QueryInterface(IDirectSoundNotify *
 
     TRACE("(%p,%s,%p)\n", This, debugstr_guid(riid), ppobj);
 
-    return IDirectSoundCaptureBuffer_QueryInterface(&This->IDirectSoundCaptureBuffer8_iface, riid, ppobj);
+    return IDirectSoundCaptureBuffer8_QueryInterface(&This->IDirectSoundCaptureBuffer8_iface, riid, ppobj);
 }
 
 static ULONG WINAPI IDirectSoundNotifyImpl_AddRef(IDirectSoundNotify *iface)
@@ -811,7 +811,7 @@ static HRESULT IDirectSoundCaptureBufferImpl_Create(
         This->thread = CreateThread(NULL, 0, DSOUND_capture_thread, This, 0, NULL);
     }
 
-    IDirectSoundCaptureBuffer_AddRef(&This->IDirectSoundCaptureBuffer8_iface);
+    IDirectSoundCaptureBuffer8_AddRef(&This->IDirectSoundCaptureBuffer8_iface);
     *ppobj = This;
 
     TRACE("returning DS_OK\n");
diff --git a/dlls/dsound/duplex.c b/dlls/dsound/duplex.c
index 153c7b66151..4a88dd89b96 100644
--- a/dlls/dsound/duplex.c
+++ b/dlls/dsound/duplex.c
@@ -202,7 +202,7 @@ static HRESULT WINAPI IDirectSoundFullDuplexImpl_Initialize(IDirectSoundFullDupl
             TRUE);
     if (SUCCEEDED(hr)) {
         IUnknown_QueryInterface(This->ds8_unk, &IID_IDirectSound8, (void**)&ds8);
-        hr = IDirectSound_Initialize(ds8, render_dev);
+        hr = IDirectSound8_Initialize(ds8, render_dev);
     }
     if (hr != DS_OK) {
         WARN("Creating/initializing IDirectSound8 failed\n");
diff --git a/dlls/dsound/primary.c b/dlls/dsound/primary.c
index 6eb5a98b620..887ee7365d5 100644
--- a/dlls/dsound/primary.c
+++ b/dlls/dsound/primary.c
@@ -1208,7 +1208,7 @@ HRESULT primarybuffer_create(DirectSoundDevice *device, IDirectSoundBufferImpl *
                 device->pwfx->nBlockAlign, device->pwfx->wBitsPerSample,
                 device->pwfx->cbSize);
 
-        IDirectSoundBuffer_AddRef(&dsb->IDirectSoundBuffer8_iface);
+        IDirectSoundBuffer8_AddRef(&dsb->IDirectSoundBuffer8_iface);
 	*ppdsb = dsb;
 	return S_OK;
 }
diff --git a/dlls/dsound/sound3d.c b/dlls/dsound/sound3d.c
index a3a5b418a03..03fd3d46782 100644
--- a/dlls/dsound/sound3d.c
+++ b/dlls/dsound/sound3d.c
@@ -730,7 +730,7 @@ static HRESULT WINAPI IDirectSound3DListenerImpl_QueryInterface(IDirectSound3DLi
 
         TRACE("(%p,%s,%p)\n", iface, debugstr_guid(riid), ppobj);
 
-        return IDirectSoundBuffer_QueryInterface(&This->IDirectSoundBuffer8_iface, riid, ppobj);
+        return IDirectSoundBuffer8_QueryInterface(&This->IDirectSoundBuffer8_iface, riid, ppobj);
 }
 
 static ULONG WINAPI IDirectSound3DListenerImpl_AddRef(IDirectSound3DListener *iface)