diff --git a/technic/machines/LV/cnc.lua b/technic/machines/LV/cnc.lua
index 58ec6ba..fdfec99 100644
--- a/technic/machines/LV/cnc.lua
+++ b/technic/machines/LV/cnc.lua
@@ -48,7 +48,7 @@ local twosize_products = {
 }
 
 local cnc_formspec =
-	"invsize[9,11;]"..
+	"size[9,11;]"..
 	"label[1,0;"..S("Choose Milling Program:").."]"..
 	"image_button[1,0.5;1,1;technic_cnc_slope.png;slope; ]"..
 	"image_button[2,0.5;1,1;technic_cnc_slope_edge.png;slope_edge; ]"..
diff --git a/technic/machines/MV/tool_workshop.lua b/technic/machines/MV/tool_workshop.lua
index 6679d1d..a220ac0 100644
--- a/technic/machines/MV/tool_workshop.lua
+++ b/technic/machines/MV/tool_workshop.lua
@@ -19,7 +19,7 @@ minetest.register_craft({
 local workshop_demand = {5000, 3500, 2000}
 
 local workshop_formspec =
-	"invsize[8,9;]"..
+	"size[8,9;]"..
 	"list[current_name;src;3,1;1,1;]"..
 	"label[0,0;"..S("%s Tool Workshop"):format("MV").."]"..
 	"list[current_name;upgrade1;1,3;1,1;]"..
diff --git a/technic/machines/other/injector.lua b/technic/machines/other/injector.lua
index b34dd79..4fe78b2 100644
--- a/technic/machines/other/injector.lua
+++ b/technic/machines/other/injector.lua
@@ -55,7 +55,7 @@ minetest.register_craft({
 local function set_injector_formspec(meta)
 	local is_stack = meta:get_string("mode") == "whole stacks"
 	meta:set_string("formspec",
-		"invsize[8,9;]"..
+		"size[8,9;]"..
 		"item_image[0,0;1,1;technic:injector]"..
 		"label[1,0;"..S("Self-Contained Injector").."]"..
 		(is_stack and
diff --git a/technic/machines/register/generator.lua b/technic/machines/register/generator.lua
index 7805bf0..87ef6e7 100644
--- a/technic/machines/register/generator.lua
+++ b/technic/machines/register/generator.lua
@@ -35,7 +35,7 @@ function technic.register_generator(data)
 	for k, v in pairs(groups) do active_groups[k] = v end
 
 	local generator_formspec =
-		"invsize[8,9;]"..
+		"size[8,9;]"..
 		"label[0,0;"..S("Fuel-Fired %s Generator"):format(tier).."]"..
 		"list[current_name;src;3,1;1,1;]"..
 		"image[4,1;1,1;default_furnace_fire_bg.png]"..
diff --git a/technic/machines/register/machine_base.lua b/technic/machines/register/machine_base.lua
index 0c6a6b3..14cf998 100644
--- a/technic/machines/register/machine_base.lua
+++ b/technic/machines/register/machine_base.lua
@@ -44,7 +44,7 @@ function technic.register_base_machine(data)
 	for k, v in pairs(groups) do active_groups[k] = v end
 
 	local formspec =
-		"invsize[8,9;]"..
+		"size[8,9;]"..
 		"list[current_name;src;"..(4-input_size)..",1;"..input_size..",1;]"..
 		"list[current_name;dst;5,1;2,2;]"..
 		"list[current_player;main;0,5;8,4;]"..