diff --git a/clients/nitrogen/nitrogenbutton.cpp b/clients/nitrogen/nitrogenbutton.cpp
index 93aea2bf84..a1aef83096 100644
--- a/clients/nitrogen/nitrogenbutton.cpp
+++ b/clients/nitrogen/nitrogenbutton.cpp
@@ -50,7 +50,7 @@ namespace Nitrogen
     colorCacheInvalid_(true)
   {
     setAutoFillBackground(false);
-    setAttribute(Qt::WA_OpaquePaintEvent, false);
+    setAttribute(Qt::WA_NoSystemBackground);
     
     {
       unsigned int size( client_.configuration().buttonSize() );
diff --git a/clients/nitrogen/nitrogenclient.cpp b/clients/nitrogen/nitrogenclient.cpp
index 3dfce9092d..0a47853a85 100644
--- a/clients/nitrogen/nitrogenclient.cpp
+++ b/clients/nitrogen/nitrogenclient.cpp
@@ -95,7 +95,6 @@ namespace Nitrogen
     
     KCommonDecoration::init();
     widget()->setAttribute(Qt::WA_NoSystemBackground );
-    widget()->setAttribute( Qt::WA_OpaquePaintEvent );
     widget()->setAutoFillBackground( false );
     initialized_ = true;