diff --git a/AppKit/CPColorPanel.j b/AppKit/CPColorPanel.j
index 7d847a30f..d00baa311 100644
--- a/AppKit/CPColorPanel.j
+++ b/AppKit/CPColorPanel.j
@@ -71,7 +71,6 @@ var SharedColorPanel = nil,
 */
 @implementation CPColorPanel : CPPanel
 {
-    _CPColorPanelToolbar    _toolbar;
     _CPColorPanelSwatches   _swatchView;
     _CPColorPanelPreview    _previewView;
 
diff --git a/AppKit/CPMenu/_CPMenuBarWindow.j b/AppKit/CPMenu/_CPMenuBarWindow.j
index db9077b06..693cafaea 100644
--- a/AppKit/CPMenu/_CPMenuBarWindow.j
+++ b/AppKit/CPMenu/_CPMenuBarWindow.j
@@ -32,7 +32,6 @@
 
 @implementation _CPMenuBarWindow : CPPanel
 {
-    CPMenu      _menu;
     CPView      _highlightView;
     CPArray     _menuItemViews;
 
diff --git a/AppKit/CPRuleEditor/_CPRuleEditorViewSlice.j b/AppKit/CPRuleEditor/_CPRuleEditorViewSlice.j
index 2cec0efae..329ee3899 100644
--- a/AppKit/CPRuleEditor/_CPRuleEditorViewSlice.j
+++ b/AppKit/CPRuleEditor/_CPRuleEditorViewSlice.j
@@ -29,7 +29,6 @@
     CGRect       _animationTargetRect   @accessors(property=_animationTargetRect);
     BOOL         _selected              @accessors(getter=_isSelected, setter=_setSelected:);
     BOOL         _lastSelected          @accessors(getter=_isLastSelected, setter=_setLastSelected:);
-    CPColor      _backgroundColor       @accessors(property=backgroundColor);
     BOOL         _editable              @accessors(getter=isEditable, setter=setEditable:);
 }
 
diff --git a/AppKit/CPWindow/_CPHUDWindowView.j b/AppKit/CPWindow/_CPHUDWindowView.j
index 829f78eee..9103eb562 100644
--- a/AppKit/CPWindow/_CPHUDWindowView.j
+++ b/AppKit/CPWindow/_CPHUDWindowView.j
@@ -27,7 +27,6 @@
 
 @implementation _CPHUDWindowView : _CPTitleableWindowView
 {
-    CPView              _toolbarView;
     CPButton            _closeButton;
 }
 
diff --git a/AppKit/CPWindow/_CPStandardWindowView.j b/AppKit/CPWindow/_CPStandardWindowView.j
index d8ea56ceb..dea5937be 100644
--- a/AppKit/CPWindow/_CPStandardWindowView.j
+++ b/AppKit/CPWindow/_CPStandardWindowView.j
@@ -94,7 +94,6 @@ var _CPStandardWindowViewDividerViewHeight = 1.0;
     _CPTexturedWindowHeadView   _headView;
     CPView                      _dividerView;
     CPView                      _bodyView;
-    CPView                      _toolbarView;
 
     CPButton                    _closeButton;
     CPButton                    _minimizeButton;
diff --git a/AppKit/Cib/CPCibHelpConnector.j b/AppKit/Cib/CPCibHelpConnector.j
index 925b3393f..3748e757e 100644
--- a/AppKit/Cib/CPCibHelpConnector.j
+++ b/AppKit/Cib/CPCibHelpConnector.j
@@ -24,7 +24,6 @@
 
 @implementation CPCibHelpConnector : CPCibConnector
 {
-    id _destination;
     id _file;
     id _marker;
 }
diff --git a/AppKit/_CPPopoverWindow.j b/AppKit/_CPPopoverWindow.j
index e836fea73..7a1f5edcc 100644
--- a/AppKit/_CPPopoverWindow.j
+++ b/AppKit/_CPPopoverWindow.j
@@ -63,7 +63,6 @@ var _CPPopoverWindow_shouldClose_    = 1 << 4,
     BOOL            _browserAnimates;
     BOOL            _isObservingFrame;
     BOOL            _shouldPerformAnimation;
-    CPInteger       _implementedDelegateMethods;
     CGRect          _targetRect;
     CPWindow        _targetWindow;
     JSObject        _orderOutTransitionFunction;
diff --git a/Tools/nib2cib/NSButton.j b/Tools/nib2cib/NSButton.j
index 4517263fa..2a5aa1d08 100644
--- a/Tools/nib2cib/NSButton.j
+++ b/Tools/nib2cib/NSButton.j
@@ -409,7 +409,6 @@ var NSButtonIsBorderedMask = 0x00800000,
 
 @implementation NSButtonCell : NSActionCell
 {
-    BOOL        _isBordered         @accessors(readonly, getter=isBordered);
     int         _bezelStyle         @accessors(readonly, getter=bezelStyle);
 
     CPString    _title              @accessors(readonly, getter=title);
diff --git a/Tools/nib2cib/NSDatePicker.j b/Tools/nib2cib/NSDatePicker.j
index a90983ec5..c14ab8c55 100644
--- a/Tools/nib2cib/NSDatePicker.j
+++ b/Tools/nib2cib/NSDatePicker.j
@@ -177,7 +177,6 @@ var NSDatePickerDefaultSize = 22,
     BOOL            _drawsBackground    @accessors(getter=drawsBackground);
     CPDate          _minDate            @accessors(getter=minDate);
     CPDate          _maxDate            @accessors(getter=maxDate);
-    CPDateFormatter _formatter          @accessors(getter=formatter);
     CPInteger       _datePickerMode     @accessors(getter=datePickerMode);
     CPInteger       _datePickerElements @accessors(getter=datePickerElements);
     CPInteger       _datePickerType     @accessors(getter=datePickerType);