diff --git a/Barotrauma/BarotraumaShared/Lua/PostSetup.lua b/Barotrauma/BarotraumaShared/Lua/PostSetup.lua
index ae69bd735..0ac5ec464 100644
--- a/Barotrauma/BarotraumaShared/Lua/PostSetup.lua
+++ b/Barotrauma/BarotraumaShared/Lua/PostSetup.lua
@@ -23,7 +23,7 @@ end
 
 local originalRegisterType = LuaUserData.RegisterType
 LuaUserData.RegisterType = function (typeName)
-    if not IsAllowed(typeName) then
+    if not LuaUserData.IsRegistered(typeName) and not IsAllowed(typeName) then
         error("Couldn't register type " .. typeName .. ".", 2)
     end
 
@@ -38,8 +38,8 @@ end
 
 local originalCreateStatic = LuaUserData.CreateStatic
 LuaUserData.CreateStatic = function (typeName, addCallMethod)
-    if not IsAllowed(typeName) then
-        error("Couldn't register type " .. typeName .. ".", 2)
+    if not LuaUserData.IsRegistered(typeName) and not IsAllowed(typeName) then
+        error("Couldn't create static type " .. typeName .. ".", 2)
     end
 
     local success, result = pcall(originalCreateStatic, typeName, addCallMethod)