diff --git a/label.go b/label.go
index e07dc47..c5e2ea8 100644
--- a/label.go
+++ b/label.go
@@ -10,17 +10,17 @@ import (
 // Label text is drawn on a single line; text that does not fit is truncated.
 // TODO vertical alignment
 type Label struct {
-	lock		sync.Mutex
-	created	bool
-	sysData	*sysData
-	initText	string
+	lock     sync.Mutex
+	created  bool
+	sysData  *sysData
+	initText string
 }
 
 // NewLabel creates a new Label with the specified text.
 func NewLabel(text string) *Label {
 	return &Label{
-		sysData:	mksysdata(c_label),
-		initText:	text,
+		sysData:  mksysdata(c_label),
+		initText: text,
 	}
 }
 
@@ -62,11 +62,11 @@ func (l *Label) make(window *sysData) error {
 
 func (l *Label) setRect(x int, y int, width int, height int, rr *[]resizerequest) {
 	*rr = append(*rr, resizerequest{
-		sysData:	l.sysData,
-		x:		x,
-		y:		y,
-		width:	width,
-		height:	height,
+		sysData: l.sysData,
+		x:       x,
+		y:       y,
+		width:   width,
+		height:  height,
 	})
 }
 
diff --git a/lineedit.go b/lineedit.go
index 2b679aa..17d0791 100644
--- a/lineedit.go
+++ b/lineedit.go
@@ -8,26 +8,26 @@ import (
 
 // A LineEdit is a control which allows you to enter a single line of text.
 type LineEdit struct {
-	lock			sync.Mutex
-	created		bool
-	sysData		*sysData
-	initText		string
-	password		bool
+	lock     sync.Mutex
+	created  bool
+	sysData  *sysData
+	initText string
+	password bool
 }
 
 // NewLineEdit makes a new LineEdit with the specified text.
 func NewLineEdit(text string) *LineEdit {
 	return &LineEdit{
-		sysData:	mksysdata(c_lineedit),
-		initText:	text,
+		sysData:  mksysdata(c_lineedit),
+		initText: text,
 	}
 }
 
 // NewPasswordEdit makes a new LineEdit which allows the user to enter a password.
 func NewPasswordEdit() *LineEdit {
 	return &LineEdit{
-		sysData:		mksysdata(c_lineedit),
-		password:		true,
+		sysData:  mksysdata(c_lineedit),
+		password: true,
 	}
 }
 
@@ -70,11 +70,11 @@ func (l *LineEdit) make(window *sysData) error {
 
 func (l *LineEdit) setRect(x int, y int, width int, height int, rr *[]resizerequest) {
 	*rr = append(*rr, resizerequest{
-		sysData:	l.sysData,
-		x:		x,
-		y:		y,
-		width:	width,
-		height:	height,
+		sysData: l.sysData,
+		x:       x,
+		y:       y,
+		width:   width,
+		height:  height,
 	})
 }
 
diff --git a/listbox.go b/listbox.go
index 7ad7adf..6c8b149 100644
--- a/listbox.go
+++ b/listbox.go
@@ -12,16 +12,16 @@ import (
 // For information on scrollbars, see "Scrollbars" in the Overview.
 // Due to implementation issues, the presence of horizontal scrollbars is currently implementation-defined.
 type Listbox struct {
-	lock		sync.Mutex
-	created	bool
-	sysData	*sysData
-	initItems	[]string
+	lock      sync.Mutex
+	created   bool
+	sysData   *sysData
+	initItems []string
 }
 
 func newListbox(multiple bool, items ...string) (l *Listbox) {
 	l = &Listbox{
-		sysData:		mksysdata(c_listbox),
-		initItems:		items,
+		sysData:   mksysdata(c_listbox),
+		initItems: items,
 	}
 	l.sysData.alternate = multiple
 	return l
@@ -70,7 +70,7 @@ func (l *Listbox) InsertBefore(what string, before int) {
 	if before < 0 || before >= len(l.initItems) {
 		goto badrange
 	}
-	m = make([]string, 0, len(l.initItems) + 1)
+	m = make([]string, 0, len(l.initItems)+1)
 	m = append(m, l.initItems[:before]...)
 	m = append(m, what)
 	l.initItems = append(m, l.initItems[before:]...)
@@ -94,7 +94,7 @@ func (l *Listbox) Delete(index int) {
 	if index < 0 || index >= len(l.initItems) {
 		goto badrange
 	}
-	l.initItems = append(l.initItems[:index], l.initItems[index + 1:]...)
+	l.initItems = append(l.initItems[:index], l.initItems[index+1:]...)
 	return
 badrange:
 	panic(fmt.Errorf("index %d out of range in Listbox.Delete()", index))
@@ -152,11 +152,11 @@ func (l *Listbox) make(window *sysData) (err error) {
 
 func (l *Listbox) setRect(x int, y int, width int, height int, rr *[]resizerequest) {
 	*rr = append(*rr, resizerequest{
-		sysData:	l.sysData,
-		x:		x,
-		y:		y,
-		width:	width,
-		height:	height,
+		sysData: l.sysData,
+		x:       x,
+		y:       y,
+		width:   width,
+		height:  height,
 	})
 }
 
diff --git a/listbox_darwin.go b/listbox_darwin.go
index 8c4cb17..4edb19c 100644
--- a/listbox_darwin.go
+++ b/listbox_darwin.go
@@ -2,10 +2,6 @@
 
 package ui
 
-import (
-	// ...
-)
-
 /*
 The Cocoa API was not designed to be used directly in code; you were intended to build your user interfaces with Interface Builder. There is no dedicated listbox class; we have to synthesize it with a NSTableView. And this is difficult in code.
 
@@ -81,7 +77,6 @@ func listboxArrayItemAt(array C.id, index int) string {
 	return fromListboxItem(dict)
 }
 
-
 /*
 Now we have to establish the binding. To do this, we need the following things:
 	- the object to bind (NSTableColumn)
@@ -139,7 +134,7 @@ The actual creation code was moved to objc_darwin.go.
 
 func makeListboxScrollView(listbox C.id) C.id {
 	scrollview := makeScrollView(listbox)
-	C.giveScrollViewBezelBorder(scrollview)		// this is what Interface Builder gives the scroll view
+	C.giveScrollViewBezelBorder(scrollview) // this is what Interface Builder gives the scroll view
 	return scrollview
 }
 
@@ -190,7 +185,7 @@ func listboxSelectedIndices(listbox C.id) (list []int) {
 	list = make([]int, count)
 	list[0] = int(C.listboxIndexesFirst(indices))
 	for i := 1; i < count; i++ {
-		list[i] = int(C.listboxIndexesNext(indices, C.uintptr_t(list[i - 1])))
+		list[i] = int(C.listboxIndexesNext(indices, C.uintptr_t(list[i-1])))
 	}
 	return list
 }