diff --git a/tests/graphics/bitmap.cpp b/tests/graphics/bitmap.cpp
index 80f10170bd..365fa3f7b4 100644
--- a/tests/graphics/bitmap.cpp
+++ b/tests/graphics/bitmap.cpp
@@ -93,7 +93,7 @@ void BitmapTestCase::OverlappingBlit()
     m_bmp.SetMask( NULL );
 
     // Clear to white.
-
+    {
     wxMemoryDC dc(m_bmp);
     dc.SetBackground( *wxWHITE );
     dc.Clear();
@@ -106,6 +106,7 @@ void BitmapTestCase::OverlappingBlit()
     // Scroll down one line.
 
     dc.Blit( 0, 1, 10, 9, &dc, 0, 0 );
+    } // Select the bitmap out of the memory DC before using it directly.
 
     // Now, lines 0 and 1 should be red, lines 2++ should still be white.