diff --git a/worldedit_gui/init.lua b/worldedit_gui/init.lua
index 628033b..c2209d5 100644
--- a/worldedit_gui/init.lua
+++ b/worldedit_gui/init.lua
@@ -134,7 +134,54 @@ elseif rawget(_G, "inventory_plus") then --inventory++ installed
 			inventory_plus.set_inventory_formspec(player, get_formspec(name, page))
 		end
 	end
-elseif rawget(_G, "sfinv") and sfinv.enabled then --sfinv installed (part of minetest_game since 0.4.15)
+elseif rawget(_G, "smart_inventory") then -- smart_inventory installed
+	-- redefinition: Update the code element on inventory page to show the we-page
+	function worldedit.show_page(name, page)
+		local state = smart_inventory.get_page_state("worldedit_gui", name)
+		if state then
+			state:get("code"):set_we_formspec(page)
+			state.location.rootState:show() -- update inventory page
+		end
+	end
+
+	-- smart_inventory page callback. Contains just a "custom code" element
+	local function smart_worldedit_gui_callback(state)
+		local codebox = state:element("code", { name = "code", code = "" })
+		function codebox:set_we_formspec(we_page)
+			local new_formspec = get_formspec(state.location.rootState.location.player, we_page)
+			new_formspec = new_formspec:gsub('button_exit','button') --no inventory closing
+			self.data.code = "container[1,1]".. new_formspec .. "container_end[]"
+		end
+		codebox:set_we_formspec("worldedit_gui")
+
+		-- process input (the back button)
+		state:onInput(function(state, fields, player)
+			if fields.worldedit_gui then --main page
+				state:get("code"):set_we_formspec("worldedit_gui")
+			end
+		end)
+	end
+
+	-- all handler should return false to force inventory UI update
+	local orig_register_gui_handler = worldedit.register_gui_handler
+	worldedit.register_gui_handler = function(identifier, handler)
+		local wrapper = function(...)
+			handler(...)
+			return false
+		end
+		orig_register_gui_handler(identifier, wrapper)
+	end
+
+	-- register the inventory button
+	smart_inventory.register_page({
+		name = "worldedit_gui",
+		tooltip = "Edit your World!",
+		icon = "inventory_plus_worldedit_gui.png",
+		smartfs_callback = smart_worldedit_gui_callback,
+		sequence = 99
+	})
+elseif rawget(_G, "sfinv") then --sfinv installed (part of minetest_game since 0.4.15)
+	assert(sfinv.enabled)
 	local orig_get = sfinv.pages["sfinv:crafting"].get
 	sfinv.override_page("sfinv:crafting", {
 		get = function(self, player, context)
@@ -170,52 +217,7 @@ elseif rawget(_G, "sfinv") and sfinv.enabled then --sfinv installed (part of min
 			player:set_inventory_formspec(get_formspec(name, page))
 		end
 	end
-elseif rawget(_G, "smart_inventory") then -- smart_inventory installed
-	-- redefinition: Update the code element on inventory page to show the we-page
-	function worldedit.show_page(name, page)
-		local state = smart_inventory.get_page_state("worldedit_gui", name)
-		if state then
-			state:get("code"):set_we_formspec(page)
-			state.location.rootState:show() -- update inventory page
-		end
-	end
 
-	-- smart_inventory page callback. Contains just a "custom code" element
-	function smart_worldedit_gui_callback(state)
-		local codebox = state:element("code", { name = "code", code = "" })
-		function codebox:set_we_formspec(we_page)
-			local new_formspec = get_formspec(state.location.rootState.location.player, we_page)
-			new_formspec = new_formspec:gsub('button_exit','button') --no inventory closing
-			self.data.code = "container[1,1]".. new_formspec .. "container_end[]"
-		end
-		codebox:set_we_formspec("worldedit_gui")
-
-		-- process input (the back button)
-		state:onInput(function(state, fields, player)
-			if fields.worldedit_gui then --main page
-				state:get("code"):set_we_formspec("worldedit_gui")
-			end
-		end)
-	end
-
-	-- all handler should return false to force inventory UI update
-	local orig_register_gui_handler = worldedit.register_gui_handler
-	worldedit.register_gui_handler = function(identifier, handler)
-		local wrapper = function(...)
-			handler(...)
-			return false
-		end
-		orig_register_gui_handler(identifier, wrapper)
-	end
-
-	-- register the inventory button
-	smart_inventory.register_page({
-		name = "worldedit_gui",
-		tooltip = "Edit your World!",
-		icon = "inventory_plus_worldedit_gui.png",
-		smartfs_callback = smart_worldedit_gui_callback,
-		sequence = 99
-	})
 else
 	error(
 		"worldedit_gui requires a supported \"gui management\" mod to be installed\n"..