diff --git a/effects/boxswitch/boxswitch.cpp b/effects/boxswitch/boxswitch.cpp
index 8fd96c9f7e..0963c8d88b 100644
--- a/effects/boxswitch/boxswitch.cpp
+++ b/effects/boxswitch/boxswitch.cpp
@@ -815,7 +815,7 @@ void BoxSwitchEffect::paintWindowThumbnail( EffectWindow* w )
 
         // paint one part of the thumbnail
         effects->paintWindow( w,
-            PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED,
+            PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED | PAINT_WINDOW_LANCZOS,
             windows[ w ]->thumbnail, data );
 
         QRect secondThumbnail;
@@ -864,7 +864,7 @@ void BoxSwitchEffect::paintWindowThumbnail( EffectWindow* w )
             secondThumbnail.adjusted( highlight_margin, highlight_margin, -highlight_margin, -highlight_margin ),
             Qt::KeepAspectRatio );
         effects->paintWindow( w,
-            PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED,
+            PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED | PAINT_WINDOW_LANCZOS,
             windows[ w ]->thumbnail, data );
         }
     else if( ( windows.size() % 2 == 0 ) && ( w == right_window ) )
@@ -916,7 +916,7 @@ void BoxSwitchEffect::paintWindowThumbnail( EffectWindow* w )
         // left quads are painted on right side of frame
         data.quads = leftQuads;
         effects->drawWindow( w,
-            PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED,
+            PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED | PAINT_WINDOW_LANCZOS,
             windows[ w ]->thumbnail, data );
 
         // right quads are painted on left side of frame
@@ -930,16 +930,13 @@ void BoxSwitchEffect::paintWindowThumbnail( EffectWindow* w )
             secondThumbnail.adjusted( highlight_margin, highlight_margin, -highlight_margin, -highlight_margin ),
             Qt::KeepAspectRatio );
         effects->drawWindow( w,
-            PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED,
+            PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED | PAINT_WINDOW_LANCZOS,
             windows[ w ]->thumbnail, data );        
         }
     else
         {
-        int mask = PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED;
-        if (!mAnimateSwitch)
-            mask |= PAINT_WINDOW_LANCZOS;
         effects->drawWindow( w,
-                 mask,
+                 PAINT_WINDOW_OPAQUE | PAINT_WINDOW_TRANSFORMED | PAINT_WINDOW_LANCZOS,
                 windows[ w ]->thumbnail, data );
         }
     }