diff --git a/dlls/d3d8/device.c b/dlls/d3d8/device.c
index b4179eb1911..5a029f20cb6 100644
--- a/dlls/d3d8/device.c
+++ b/dlls/d3d8/device.c
@@ -1322,16 +1322,15 @@ static HRESULT WINAPI d3d8_device_SetViewport(IDirect3DDevice8 *iface, const D3D
 static HRESULT WINAPI d3d8_device_GetViewport(IDirect3DDevice8 *iface, D3DVIEWPORT8 *viewport)
 {
     struct d3d8_device *device = impl_from_IDirect3DDevice8(iface);
-    HRESULT hr;
 
     TRACE("iface %p, viewport %p.\n", iface, viewport);
 
     /* Note: D3DVIEWPORT8 is compatible with struct wined3d_viewport. */
     wined3d_mutex_lock();
-    hr = wined3d_device_get_viewport(device->wined3d_device, (struct wined3d_viewport *)viewport);
+    wined3d_device_get_viewport(device->wined3d_device, (struct wined3d_viewport *)viewport);
     wined3d_mutex_unlock();
 
-    return hr;
+    return D3D_OK;
 }
 
 static HRESULT WINAPI d3d8_device_SetMaterial(IDirect3DDevice8 *iface, const D3DMATERIAL8 *material)
diff --git a/dlls/d3d9/device.c b/dlls/d3d9/device.c
index 6922e81c44f..2e33c9fda66 100644
--- a/dlls/d3d9/device.c
+++ b/dlls/d3d9/device.c
@@ -1388,16 +1388,15 @@ static HRESULT WINAPI d3d9_device_SetViewport(IDirect3DDevice9Ex *iface, const D
 static HRESULT WINAPI d3d9_device_GetViewport(IDirect3DDevice9Ex *iface, D3DVIEWPORT9 *viewport)
 {
     struct d3d9_device *device = impl_from_IDirect3DDevice9Ex(iface);
-    HRESULT hr;
 
     TRACE("iface %p, viewport %p.\n", iface, viewport);
 
     /* Note: D3DVIEWPORT9 is compatible with struct wined3d_viewport. */
     wined3d_mutex_lock();
-    hr = wined3d_device_get_viewport(device->wined3d_device, (struct wined3d_viewport *)viewport);
+    wined3d_device_get_viewport(device->wined3d_device, (struct wined3d_viewport *)viewport);
     wined3d_mutex_unlock();
 
-    return hr;
+    return D3D_OK;
 }
 
 static HRESULT WINAPI d3d9_device_SetMaterial(IDirect3DDevice9Ex *iface, const D3DMATERIAL9 *material)
diff --git a/dlls/ddraw/device.c b/dlls/ddraw/device.c
index aec30de7961..7848b0d78f0 100644
--- a/dlls/ddraw/device.c
+++ b/dlls/ddraw/device.c
@@ -5042,7 +5042,6 @@ static HRESULT WINAPI d3d_device7_SetViewport_FPUPreserve(IDirect3DDevice7 *ifac
 static HRESULT d3d_device7_GetViewport(IDirect3DDevice7 *iface, D3DVIEWPORT7 *viewport)
 {
     struct d3d_device *device = impl_from_IDirect3DDevice7(iface);
-    HRESULT hr;
 
     TRACE("iface %p, viewport %p.\n", iface, viewport);
 
@@ -5051,10 +5050,10 @@ static HRESULT d3d_device7_GetViewport(IDirect3DDevice7 *iface, D3DVIEWPORT7 *vi
 
     /* Note: D3DVIEWPORT7 is compatible with struct wined3d_viewport. */
     wined3d_mutex_lock();
-    hr = wined3d_device_get_viewport(device->wined3d_device, (struct wined3d_viewport *)viewport);
+    wined3d_device_get_viewport(device->wined3d_device, (struct wined3d_viewport *)viewport);
     wined3d_mutex_unlock();
 
-    return hr_ddraw_from_wined3d(hr);
+    return D3D_OK;
 }
 
 static HRESULT WINAPI d3d_device7_GetViewport_FPUSetup(IDirect3DDevice7 *iface, D3DVIEWPORT7 *viewport)
diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index 7753ae4d867..e0849cef29b 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -2310,13 +2310,11 @@ void CDECL wined3d_device_set_viewport(struct wined3d_device *device, const stru
     device_invalidate_state(device, STATE_VIEWPORT);
 }
 
-HRESULT CDECL wined3d_device_get_viewport(const struct wined3d_device *device, struct wined3d_viewport *viewport)
+void CDECL wined3d_device_get_viewport(const struct wined3d_device *device, struct wined3d_viewport *viewport)
 {
     TRACE("device %p, viewport %p.\n", device, viewport);
 
     *viewport = device->stateBlock->state.viewport;
-
-    return WINED3D_OK;
 }
 
 HRESULT CDECL wined3d_device_set_render_state(struct wined3d_device *device,
diff --git a/include/wine/wined3d.h b/include/wine/wined3d.h
index fa8b417aeb5..1fa13420050 100644
--- a/include/wine/wined3d.h
+++ b/include/wine/wined3d.h
@@ -2168,7 +2168,7 @@ HRESULT __cdecl wined3d_device_get_transform(const struct wined3d_device *device
 HRESULT __cdecl wined3d_device_get_vertex_declaration(const struct wined3d_device *device,
         struct wined3d_vertex_declaration **declaration);
 struct wined3d_shader * __cdecl wined3d_device_get_vertex_shader(const struct wined3d_device *device);
-HRESULT __cdecl wined3d_device_get_viewport(const struct wined3d_device *device, struct wined3d_viewport *viewport);
+void __cdecl wined3d_device_get_viewport(const struct wined3d_device *device, struct wined3d_viewport *viewport);
 HRESULT __cdecl wined3d_device_get_vs_consts_b(const struct wined3d_device *device,
         UINT start_register, BOOL *constants, UINT bool_count);
 HRESULT __cdecl wined3d_device_get_vs_consts_f(const struct wined3d_device *device,