diff --git a/main.go b/main.go
index 73d3576..57e56d2 100644
--- a/main.go
+++ b/main.go
@@ -13,6 +13,12 @@ import (
 
 const AutoRefreshInterval = 1 * time.Second
 
+const (
+	ContainersTab int = 0
+	ImagesTab     int = 1
+	NetworksTab   int = 2
+	VolumesTab    int = 3
+)
 func NewStatusDelegate(status string) *qt.QWidget {
 	mw := qt.NewQWidget2()
 
@@ -318,23 +324,23 @@ func (self *DockerGUI) update_toolbar_buttons(index int) {
 	// Show actions based on the current tab
 
 	// Containers tab
-	self.start_action.SetVisible(index == 0)
-	self.stop_action.SetVisible(index == 0)
-	self.remove_action.SetVisible(index == 0)
-	self.terminal_action.SetVisible(index == 0)
-	self.logs_action.SetVisible(index == 0)
+	self.start_action.SetVisible(index == ContainersTab)
+	self.stop_action.SetVisible(index == ContainersTab)
+	self.remove_action.SetVisible(index == ContainersTab)
+	self.terminal_action.SetVisible(index == ContainersTab)
+	self.logs_action.SetVisible(index == ContainersTab)
 
 	// Images tab
-	self.pull_image_action.SetVisible(index == 1)
-	self.remove_image_action.SetVisible(index == 1)
+	self.pull_image_action.SetVisible(index == ImagesTab)
+	self.remove_image_action.SetVisible(index == ImagesTab)
 
 	// Networks tab
-	self.create_network_action.SetVisible(index == 2)
-	self.remove_network_action.SetVisible(index == 2)
+	self.create_network_action.SetVisible(index == NetworksTab)
+	self.remove_network_action.SetVisible(index == NetworksTab)
 
 	// Volumes tab
-	self.create_volume_action.SetVisible(index == 3)
-	self.remove_volume_action.SetVisible(index == 3)
+	self.create_volume_action.SetVisible(index == VolumesTab)
+	self.remove_volume_action.SetVisible(index == VolumesTab)
 }
 
 func (self *DockerGUI) create_menu_bar() {