diff --git a/widget.go b/widget.go
index c12d717..ba0ac2c 100644
--- a/widget.go
+++ b/widget.go
@@ -95,22 +95,22 @@ func NewWidget(base string, kc KeyConfig, bg image.Image) (Widget, error) {
 		kc.Widget.Config = make(map[string]interface{})
 		kc.Widget.Config["format"] = "%H;%i;%s"
 		kc.Widget.Config["font"] = "bold;regular;thin"
-		return NewTimeWidget(*bw, kc.Widget)
+		return NewTimeWidget(*bw, kc.Widget), nil
 
 	case "date":
 		kc.Widget.Config = make(map[string]interface{})
 		kc.Widget.Config["format"] = "%l;%d;%M"
 		kc.Widget.Config["font"] = "regular;bold;regular"
-		return NewTimeWidget(*bw, kc.Widget)
+		return NewTimeWidget(*bw, kc.Widget), nil
 
 	case "time":
-		return NewTimeWidget(*bw, kc.Widget)
+		return NewTimeWidget(*bw, kc.Widget), nil
 
 	case "recentWindow":
 		return NewRecentWindowWidget(*bw, kc.Widget)
 
 	case "top":
-		return NewTopWidget(*bw, kc.Widget)
+		return NewTopWidget(*bw, kc.Widget), nil
 	}
 
 	// unknown widget ID
diff --git a/widget_time.go b/widget_time.go
index 9eeac15..a383fff 100644
--- a/widget_time.go
+++ b/widget_time.go
@@ -17,18 +17,19 @@ type TimeWidget struct {
 	font   string
 }
 
-func NewTimeWidget(bw BaseWidget, opts WidgetConfig) (*TimeWidget, error) {
+// NewTimeWidget returns a new TimeWidget.
+func NewTimeWidget(bw BaseWidget, opts WidgetConfig) *TimeWidget {
 	bw.setInterval(opts.Interval, 500)
 
 	var format, font string
-	ConfigValue(opts.Config["format"], &format)
-	ConfigValue(opts.Config["font"], &font)
+	_ = ConfigValue(opts.Config["format"], &format)
+	_ = ConfigValue(opts.Config["font"], &font)
 
 	return &TimeWidget{
 		BaseWidget: bw,
 		format:     format,
 		font:       font,
-	}, nil
+	}
 }
 
 // Update renders the widget.
diff --git a/widget_top.go b/widget_top.go
index d95e4e3..0588c22 100644
--- a/widget_top.go
+++ b/widget_top.go
@@ -17,24 +17,26 @@ import (
 // TopWidget is a widget displaying the current CPU/MEM usage as a bar.
 type TopWidget struct {
 	BaseWidget
+
 	mode      string
 	fillColor string
 
 	lastValue float64
 }
 
-func NewTopWidget(bw BaseWidget, opts WidgetConfig) (*TopWidget, error) {
+// NewTopWidget returns a new TopWidget.
+func NewTopWidget(bw BaseWidget, opts WidgetConfig) *TopWidget {
 	bw.setInterval(opts.Interval, 500)
 
 	var mode, fillColor string
-	ConfigValue(opts.Config["mode"], &mode)
-	ConfigValue(opts.Config["fillColor"], &fillColor)
+	_ = ConfigValue(opts.Config["mode"], &mode)
+	_ = ConfigValue(opts.Config["fillColor"], &fillColor)
 
 	return &TopWidget{
 		BaseWidget: bw,
 		mode:       mode,
 		fillColor:  fillColor,
-	}, nil
+	}
 }
 
 // Update renders the widget.