diff --git a/src/generic/splash.cpp b/src/generic/splash.cpp
index a88a79d17f..8260d68795 100644
--- a/src/generic/splash.cpp
+++ b/src/generic/splash.cpp
@@ -155,7 +155,8 @@ static void wxDrawSplashBitmap(wxDC& dc, const wxBitmap& bitmap, int WXUNUSED(x)
 #endif // USE_PALETTE_IN_SPLASH
 
     dcMem.SelectObjectAsSource(bitmap);
-    dc.Blit(0, 0, bitmap.GetWidth(), bitmap.GetHeight(), & dcMem, 0, 0);
+    dc.Blit(0, 0, bitmap.GetWidth(), bitmap.GetHeight(), &dcMem, 0, 0, wxCOPY,
+            true /* use mask */);
     dcMem.SelectObject(wxNullBitmap);
 
 #ifdef USE_PALETTE_IN_SPLASH