diff --git a/translator.go b/translator.go
index 862f405..de31f3c 100644
--- a/translator.go
+++ b/translator.go
@@ -18,7 +18,7 @@ const (
 )
 
 type Translator struct {
-	src_lang  string
+	src_lang string
 	dst_lang string
 }
 
diff --git a/ui.go b/ui.go
index 94fd421..273cbf3 100644
--- a/ui.go
+++ b/ui.go
@@ -23,7 +23,6 @@ func update_background() {
 			Foreground(window.src.prefix_color))
 
 	dst_dropdown.SetBackgroundColor(window.dst.background_color)
-	// dst_dropdown.SetFieldBackgroundColor(window.src.selected_color)
 	dst_dropdown.SetListStyles(tcell.StyleDefault.
 		Background(window.src.background_color).
 		Foreground(window.src.foreground_color),
@@ -35,14 +34,6 @@ func update_background() {
 func ui_init() {
 	update_background()
 
-	// handler
-	pages.SetInputCapture(PagesHandler)
-	translate_page.SetInputCapture(TranslatePageHandler)
-	src_dropdown.SetDoneFunc(SrcDropDownHandler)
-	src_dropdown.SetSelectedFunc(SrcSelected)
-	dst_dropdown.SetDoneFunc(DstDropDownHandler)
-	dst_dropdown.SetSelectedFunc(DstSelected)
-
 	// box
 	src_box.SetBorder(true).
 		SetTitle(translator.src_lang).
@@ -78,6 +69,14 @@ func ui_init() {
 		SetTitle(translator.dst_lang).
 		SetBorderColor(window.dst.border_color).
 		SetTitleColor(window.dst.border_color)
+
+	// handler
+	pages.SetInputCapture(PagesHandler)
+	translate_page.SetInputCapture(TranslatePageHandler)
+	src_dropdown.SetDoneFunc(SrcDropDownHandler)
+	src_dropdown.SetSelectedFunc(SrcSelected)
+	dst_dropdown.SetDoneFunc(DstDropDownHandler)
+	dst_dropdown.SetSelectedFunc(DstSelected)
 }
 
 func PagesHandler(event *tcell.EventKey) *tcell.EventKey {