diff --git a/src/generic/srchctlg.cpp b/src/generic/srchctlg.cpp
index 6b902b4485..a3b63dbfe9 100644
--- a/src/generic/srchctlg.cpp
+++ b/src/generic/srchctlg.cpp
@@ -306,8 +306,8 @@ bool wxSearchCtrl::Create(wxWindow *parent, wxWindowID id,
                                         wxEVT_SEARCH,
                                         m_searchBitmap);
 
-    SetBackgroundColour( m_text->GetBackgroundColour() );
     m_text->SetBackgroundColour(wxColour());
+    SetBackgroundColour( m_text->GetBackgroundColour() );
 
     RecalcBitmaps();
 
diff --git a/src/qt/dc.cpp b/src/qt/dc.cpp
index 32e938d707..c1483c696e 100644
--- a/src/qt/dc.cpp
+++ b/src/qt/dc.cpp
@@ -222,14 +222,16 @@ void wxQtDCImpl::SetBackground(const wxBrush& brush)
 {
     m_backgroundBrush = brush;
 
+    // For consistency with the other ports: clearing the dc with
+    // invalid brush (Qt::NoBrush) should use white colour (which
+    // happens to be the default colour in Qt too) instead of no
+    // colour at all.
+    if (!m_backgroundBrush.IsOk())
+        m_backgroundBrush = *wxWHITE_BRUSH;
+
     if (m_qtPainter->isActive())
     {
-        // For consistency with the other ports: clearing the dc with
-        // invalid brush (Qt::NoBrush) should use white colour (which
-        // happens to be the default colour in Qt too) instead of no
-        // colour at all.
-        m_qtPainter->setBackground(
-            brush.IsOk() ? brush.GetHandle() : Qt::white);
+        m_qtPainter->setBackground(m_backgroundBrush.GetHandle());
     }
 }
 
diff --git a/src/qt/window.cpp b/src/qt/window.cpp
index 2a7d64c6d4..eed343f218 100644
--- a/src/qt/window.cpp
+++ b/src/qt/window.cpp
@@ -1294,8 +1294,11 @@ bool wxWindowQt::SetBackgroundColour(const wxColour& colour)
     if ( !wxWindowBase::SetBackgroundColour(colour) )
         return false;
 
-    QWidget *widget = QtGetParentWidget();
-    wxQtChangeRoleColour(widget->backgroundRole(), widget, colour);
+    if ( colour.IsOk() )
+    {
+        QWidget *widget = QtGetParentWidget();
+        wxQtChangeRoleColour(widget->backgroundRole(), widget, colour);
+    }
 
     return true;
 }