diff --git a/dlls/wined3d/directx.c b/dlls/wined3d/directx.c
index 4a135860dcf..afbc5cb95e5 100644
--- a/dlls/wined3d/directx.c
+++ b/dlls/wined3d/directx.c
@@ -730,7 +730,7 @@ HRESULT CDECL wined3d_get_output_desc(const struct wined3d *wined3d, unsigned in
     if (FAILED(hr = wined3d_get_adapter_display_mode(wined3d, adapter_idx, &mode, &rotation)))
         return hr;
 
-    memcpy(desc->device_name, adapter->DeviceName, sizeof(desc->device_name));
+    memcpy(desc->device_name, adapter->device_name, sizeof(desc->device_name));
     SetRect(&desc->desktop_rect, 0, 0, mode.width, mode.height);
     OffsetRect(&desc->desktop_rect, adapter->monitor_position.x, adapter->monitor_position.y);
     /* FIXME: We should get this from EnumDisplayDevices() when the adapters
@@ -769,7 +769,7 @@ UINT CDECL wined3d_get_adapter_mode_count(const struct wined3d *wined3d, UINT ad
     memset(&mode, 0, sizeof(mode));
     mode.dmSize = sizeof(mode);
 
-    while (EnumDisplaySettingsExW(adapter->DeviceName, j++, &mode, 0))
+    while (EnumDisplaySettingsExW(adapter->device_name, j++, &mode, 0))
     {
         if (mode.dmFields & DM_DISPLAYFLAGS)
         {
@@ -825,7 +825,7 @@ HRESULT CDECL wined3d_enum_adapter_modes(const struct wined3d *wined3d, UINT ada
 
     while (i <= mode_idx)
     {
-        if (!EnumDisplaySettingsExW(adapter->DeviceName, j++, &m, 0))
+        if (!EnumDisplaySettingsExW(adapter->device_name, j++, &m, 0))
         {
             WARN("Invalid mode_idx %u.\n", mode_idx);
             return WINED3DERR_INVALIDCALL;
@@ -994,7 +994,7 @@ HRESULT CDECL wined3d_get_adapter_display_mode(const struct wined3d *wined3d, UI
     memset(&m, 0, sizeof(m));
     m.dmSize = sizeof(m);
 
-    EnumDisplaySettingsExW(adapter->DeviceName, ENUM_CURRENT_SETTINGS, &m, 0);
+    EnumDisplaySettingsExW(adapter->device_name, ENUM_CURRENT_SETTINGS, &m, 0);
     mode->width = m.dmPelsWidth;
     mode->height = m.dmPelsHeight;
     mode->refresh_rate = DEFAULT_REFRESH_RATE;
@@ -1097,7 +1097,7 @@ HRESULT CDECL wined3d_set_adapter_display_mode(struct wined3d *wined3d,
     }
     else
     {
-        if (!EnumDisplaySettingsW(adapter->DeviceName, ENUM_REGISTRY_SETTINGS, &new_mode))
+        if (!EnumDisplaySettingsW(adapter->device_name, ENUM_REGISTRY_SETTINGS, &new_mode))
         {
             ERR("Failed to read mode from registry.\n");
             return WINED3DERR_NOTAVAILABLE;
@@ -1106,7 +1106,7 @@ HRESULT CDECL wined3d_set_adapter_display_mode(struct wined3d *wined3d,
     }
 
     /* Only change the mode if necessary. */
-    if (!EnumDisplaySettingsW(adapter->DeviceName, ENUM_CURRENT_SETTINGS, &current_mode))
+    if (!EnumDisplaySettingsW(adapter->device_name, ENUM_CURRENT_SETTINGS, &current_mode))
     {
         ERR("Failed to get current display mode.\n");
     }
@@ -1123,7 +1123,7 @@ HRESULT CDECL wined3d_set_adapter_display_mode(struct wined3d *wined3d,
         return WINED3D_OK;
     }
 
-    ret = ChangeDisplaySettingsExW(adapter->DeviceName, &new_mode, NULL, CDS_FULLSCREEN, NULL);
+    ret = ChangeDisplaySettingsExW(adapter->device_name, &new_mode, NULL, CDS_FULLSCREEN, NULL);
     if (ret != DISP_CHANGE_SUCCESSFUL)
     {
         if (new_mode.dmFields & DM_DISPLAYFREQUENCY)
@@ -1131,7 +1131,7 @@ HRESULT CDECL wined3d_set_adapter_display_mode(struct wined3d *wined3d,
             WARN("ChangeDisplaySettingsExW failed, trying without the refresh rate.\n");
             new_mode.dmFields &= ~DM_DISPLAYFREQUENCY;
             new_mode.dmDisplayFrequency = 0;
-            ret = ChangeDisplaySettingsExW(adapter->DeviceName, &new_mode, NULL, CDS_FULLSCREEN, NULL);
+            ret = ChangeDisplaySettingsExW(adapter->device_name, &new_mode, NULL, CDS_FULLSCREEN, NULL);
         }
         if (ret != DISP_CHANGE_SUCCESSFUL)
             return WINED3DERR_NOTAVAILABLE;
@@ -1182,7 +1182,7 @@ HRESULT CDECL wined3d_get_adapter_identifier(const struct wined3d *wined3d,
     /* Note that d3d8 doesn't supply a device name. */
     if (identifier->device_name_size)
     {
-        if (!WideCharToMultiByte(CP_ACP, 0, adapter->DeviceName, -1, identifier->device_name,
+        if (!WideCharToMultiByte(CP_ACP, 0, adapter->device_name, -1, identifier->device_name,
                 identifier->device_name_size, NULL, NULL))
         {
             ERR("Failed to convert device name, last error %#x.\n", GetLastError());
@@ -2516,8 +2516,8 @@ static BOOL wined3d_adapter_init(struct wined3d_adapter *adapter, unsigned int o
 
     display_device.cb = sizeof(display_device);
     EnumDisplayDevicesW(NULL, ordinal, &display_device, 0);
-    TRACE("Display device: %s\n", debugstr_w(display_device.DeviceName));
-    strcpyW(adapter->DeviceName, display_device.DeviceName);
+    TRACE("Display device: %s.\n", debugstr_w(display_device.DeviceName));
+    strcpyW(adapter->device_name, display_device.DeviceName);
 
     if (!AllocateLocallyUniqueId(&adapter->luid))
     {
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index f739e5f79c1..d493e9f5758 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -2674,13 +2674,14 @@ struct wined3d_adapter
     struct wined3d_gl_info  gl_info;
     struct wined3d_d3d_info d3d_info;
     struct wined3d_driver_info driver_info;
-    WCHAR                   DeviceName[CCHDEVICENAME]; /* DeviceName for use with e.g. ChangeDisplaySettings */
     unsigned int cfg_count;
     struct wined3d_pixel_format *cfgs;
     UINT64 vram_bytes;
     UINT64 vram_bytes_used;
     LUID luid;
 
+    WCHAR device_name[CCHDEVICENAME]; /* for use with e.g. ChangeDisplaySettings() */
+
     void *formats;
     size_t format_size;