diff --git a/pcbnew/dialogs/dialog_copper_zones.cpp b/pcbnew/dialogs/dialog_copper_zones.cpp
index 042e28e2ae..f762a7caf6 100644
--- a/pcbnew/dialogs/dialog_copper_zones.cpp
+++ b/pcbnew/dialogs/dialog_copper_zones.cpp
@@ -112,6 +112,7 @@ DIALOG_COPPER_ZONE::DIALOG_COPPER_ZONE( PCB_BASE_FRAME* aParent, ZONE_SETTINGS*
     m_ptr = aSettings;
     m_settings = *aSettings;
     m_settings.SetupLayersList( m_layers, m_Parent, true );
+    int layersWidth = m_layers->GetColumn( 0 )->GetWidth() + m_layers->GetColumn( 1 )->GetWidth();
 
     m_settingsExported = false;
 
@@ -120,7 +121,13 @@ DIALOG_COPPER_ZONE::DIALOG_COPPER_ZONE( PCB_BASE_FRAME* aParent, ZONE_SETTINGS*
 
     m_sdbSizerOK->SetDefault();
 
-    FinishDialogSettings();
+    GetSizer()->SetSizeHints( this );
+
+    // Must be done after SetSizeHints() else GTK will overwrite it
+    m_layers->SetMinSize( wxSize( layersWidth + 4, m_layers->GetMinSize().y ) );
+
+    // the default position, when calling the first time the dlg
+    Center();
 }
 
 
diff --git a/pcbnew/dialogs/dialog_copper_zones_base.cpp b/pcbnew/dialogs/dialog_copper_zones_base.cpp
index 4e23b7a530..315bc02e09 100644
--- a/pcbnew/dialogs/dialog_copper_zones_base.cpp
+++ b/pcbnew/dialogs/dialog_copper_zones_base.cpp
@@ -249,7 +249,7 @@ DIALOG_COPPER_ZONE_BASE::DIALOG_COPPER_ZONE_BASE( wxWindow* parent, wxWindowID i
 	m_ExportSetupButton = new wxButton( this, wxID_BUTTON_EXPORT, _("Export Settings to Other Zones"), wxDefaultPosition, wxDefaultSize, 0 );
 	m_ExportSetupButton->SetToolTip( _("Export this zone setup (excluding layer and net selection) to all other copper zones.") );
 	
-	bSizerbottom->Add( m_ExportSetupButton, 0, wxEXPAND|wxRIGHT|wxLEFT, 10 );
+	bSizerbottom->Add( m_ExportSetupButton, 0, wxRIGHT|wxLEFT|wxALIGN_CENTER_VERTICAL, 10 );
 	
 	m_sdbSizer = new wxStdDialogButtonSizer();
 	m_sdbSizerOK = new wxButton( this, wxID_OK );
diff --git a/pcbnew/dialogs/dialog_keepout_area_properties.cpp b/pcbnew/dialogs/dialog_keepout_area_properties.cpp
index 4621dcc128..69e3236071 100644
--- a/pcbnew/dialogs/dialog_keepout_area_properties.cpp
+++ b/pcbnew/dialogs/dialog_keepout_area_properties.cpp
@@ -69,12 +69,18 @@ DIALOG_KEEPOUT_AREA_PROPERTIES::DIALOG_KEEPOUT_AREA_PROPERTIES( PCB_BASE_FRAME*
 
     m_ptr = aSettings;
     m_zonesettings = *aSettings;
-
     m_zonesettings.SetupLayersList( m_layers, m_parent, true );
+    int layersWidth = m_layers->GetColumn( 0 )->GetWidth() + m_layers->GetColumn( 1 )->GetWidth();
 
     m_sdbSizerButtonsOK->SetDefault();
 
-    FinishDialogSettings();
+    GetSizer()->SetSizeHints( this );
+
+    // Must be done after SetSizeHints() else GTK will overwrite it
+    m_layers->SetMinSize( wxSize( layersWidth + 4, m_layers->GetMinSize().y ) );
+
+    // the default position, when calling the first time the dlg
+    Center();
 }
 
 
diff --git a/pcbnew/dialogs/dialog_non_copper_zones_properties.cpp b/pcbnew/dialogs/dialog_non_copper_zones_properties.cpp
index caff0b3a05..5d7fe3278b 100644
--- a/pcbnew/dialogs/dialog_non_copper_zones_properties.cpp
+++ b/pcbnew/dialogs/dialog_non_copper_zones_properties.cpp
@@ -72,10 +72,16 @@ DIALOG_NON_COPPER_ZONES_EDITOR::DIALOG_NON_COPPER_ZONES_EDITOR( PCB_BASE_FRAME*
 
     m_ptr  = aSettings;
     m_settings = *aSettings;
-
     m_settings.SetupLayersList( m_layers, m_parent, false );
+    int layersWidth = m_layers->GetColumn( 0 )->GetWidth() + m_layers->GetColumn( 1 )->GetWidth();
 
-    FinishDialogSettings();
+    GetSizer()->SetSizeHints( this );
+
+    // Must be done after SetSizeHints() else GTK will overwrite it
+    m_layers->SetMinSize( wxSize( layersWidth + 4, m_layers->GetMinSize().y ) );
+
+    // the default position, when calling the first time the dlg
+    Center();
 }
 
 
diff --git a/pcbnew/zone_settings.cpp b/pcbnew/zone_settings.cpp
index f731a64681..0deb046317 100644
--- a/pcbnew/zone_settings.cpp
+++ b/pcbnew/zone_settings.cpp
@@ -154,7 +154,7 @@ void ZONE_SETTINGS::SetCornerRadius( int aRadius )
 #ifdef __WXOSX_MAC__
 const static wxSize LAYER_BITMAP_SIZE( 28, 28 );  // wxCocoa impl unhappy if this isn't square...
 #else
-const static wxSize LAYER_BITMAP_SIZE( 20, 10 );
+const static wxSize LAYER_BITMAP_SIZE( 24, 18 );
 #endif
 
 // A helper for setting up a dialog list for specifying zone layers.  Used by all three
@@ -203,11 +203,6 @@ void ZONE_SETTINGS::SetupLayersList( wxDataViewListCtrl* aList, PCB_BASE_FRAME*
     // You'd think the fact that m_layers is a list would encourage wxWidgets not to save room
     // for the tree expanders... but you'd be wrong.  Force indent to 0.
     aList->SetIndent( 0 );
-
-    wxSize minSize = wxSize( checkColumn->GetWidth() + layerColumn->GetWidth() + 4,
-                             aList->GetMinSize().GetHeight() );
-    aList->SetSize( minSize );
-    aList->SetMinSize( minSize );
 }