diff --git a/druid/const.lua b/druid/const.lua
index eb870dd..be3968b 100644
--- a/druid/const.lua
+++ b/druid/const.lua
@@ -12,6 +12,7 @@ M.ACTION_BACK = hash("back")
 
 M.RELEASED = "released"
 M.PRESSED = "pressed"
+M.STRING = "string"
 
 --- Interests
 M.ON_MESSAGE = hash("on_message")
@@ -21,6 +22,18 @@ M.ON_UPDATE = hash("on_update")
 M.ON_SWIPE = hash("on_swipe")
 M.ON_INPUT = hash("on_input")
 
+M.PIVOTS = {
+	[gui.PIVOT_CENTER] = vmath.vector3(0),
+	[gui.PIVOT_N] = vmath.vector3(0, 0.5, 0),
+	[gui.PIVOT_NE] = vmath.vector3(0.5, 0.5, 0),
+	[gui.PIVOT_E] = vmath.vector3(0.5, 0, 0),
+	[gui.PIVOT_SE] = vmath.vector3(0.5, -0.5, 0),
+	[gui.PIVOT_S] = vmath.vector3(0, -0.5, 0),
+	[gui.PIVOT_SW] = vmath.vector3(-0.5, -0.5, 0),
+	[gui.PIVOT_W] = vmath.vector3(-0.5, 0, 0),
+	[gui.PIVOT_NW] = vmath.vector3(-0.5, -0.5, 0),
+}
+
 M.ui_input = {
 	[M.ON_SWIPE] = true,
 	[M.ON_INPUT] = true
@@ -30,7 +43,7 @@ M.ui_input = {
 M.ON_CHANGE_LANGUAGE = hash("on_change_language")
 M.ON_LAYOUT_CHANGED = hash("on_layout_changed")
 
-M.specific_ui_messages = {
+M.SPECIFIC_UI_MESSAGES = {
 	[M.ON_CHANGE_LANGUAGE] = "on_change_language",
 	[M.ON_LAYOUT_CHANGED] = "on_layout_changed"
 }
diff --git a/druid/druid.lua b/druid/druid.lua
index f5b7c87..d0170f7 100644
--- a/druid/druid.lua
+++ b/druid/druid.lua
@@ -91,7 +91,7 @@ local function create(self, module)
 			end
 			self[v][#self[v] + 1] = instance
 
-			if const.ui_input[v] then
+			if const.UI_INPUT[v] then
 				input_init(self)
 			end
 		end
@@ -135,7 +135,7 @@ end
 
 --- Called on_message
 function _fct_metatable.on_message(self, message_id, message, sender)
-	local specific_ui_message = const.specific_ui_messages[message_id]
+	local specific_ui_message = const.SPECIFIC_UI_MESSAGES[message_id]
 	if specific_ui_message then
 		local array = self[message_id]
 		if array then
diff --git a/druid/helper.lua b/druid/helper.lua
index 2aaea67..c7c7a36 100644
--- a/druid/helper.lua
+++ b/druid/helper.lua
@@ -81,7 +81,6 @@ function M.after(count, callback)
 end
 
 
-local STRING = "string"
 function M.node(node_or_name)
 	if type(node_or_name) == const.STRING then
 		return gui.get_node(node_or_name)
@@ -144,19 +143,8 @@ function M.is_enabled(node)
 end
 
 
-local pivots = {
-	[gui.PIVOT_CENTER] = vmath.vector3(0),
-	[gui.PIVOT_N] = vmath.vector3(0, 0.5, 0),
-	[gui.PIVOT_NE] = vmath.vector3(0.5, 0.5, 0),
-	[gui.PIVOT_E] = vmath.vector3(0.5, 0, 0),
-	[gui.PIVOT_SE] = vmath.vector3(0.5, -0.5, 0),
-	[gui.PIVOT_S] = vmath.vector3(0, -0.5, 0),
-	[gui.PIVOT_SW] = vmath.vector3(-0.5, -0.5, 0),
-	[gui.PIVOT_W] = vmath.vector3(-0.5, 0, 0),
-	[gui.PIVOT_NW] = vmath.vector3(-0.5, -0.5, 0),
-}
 function M.get_pivot_offset(pivot)
-	return pivots[pivot]
+	return const.PIVOTS[pivot]
 end