diff --git a/dlls/wined3d/surface_gdi.c b/dlls/wined3d/surface_gdi.c
index 9609ebd8e36..f9b20c14aeb 100644
--- a/dlls/wined3d/surface_gdi.c
+++ b/dlls/wined3d/surface_gdi.c
@@ -1516,7 +1516,7 @@ IWineGDISurfaceImpl_PrivateSetup(IWineD3DSurface *iface)
     This->resource.allocatedMemory = NULL;
 
     /* We don't mind the nonpow2 stuff in GDI */
-    This->resource.size = This->currentDesc.Width * getFormatDescEntry(This->resource.format)->bpp * This->currentDesc.Width;
+    This->resource.size = This->currentDesc.Width * getFormatDescEntry(This->resource.format)->bpp * This->currentDesc.Height;
     This->pow2Size = This->resource.size;
     This->pow2Width = This->currentDesc.Width;
     This->pow2Height = This->currentDesc.Height;