diff --git a/MWSE/mods/Keyboard Layout Changer/common.lua b/MWSE/mods/Keyboard Layout Changer/common.lua
index 25a1a31..07f74a4 100644
--- a/MWSE/mods/Keyboard Layout Changer/common.lua	
+++ b/MWSE/mods/Keyboard Layout Changer/common.lua	
@@ -1,8 +1,7 @@
 local keys = require("Keyboard Layout Changer.keys")
+
 local supportedLayouts = ""
-for name, _ in pairs(keys) do
-    supportedLayouts = supportedLayouts .. name .. " "
-end
+for name, _ in pairs(keys) do supportedLayouts = supportedLayouts .. name .. " " end
 
 local this = {}
 
@@ -15,9 +14,15 @@ this.modInfo = "Allows use of non-qwerty keyboard layouts.\n\nCurrently supporte
 function this.log(str) mwse.log("[%s] %s", this.modName, str) end
 
 function this.changeLayout(layout)
-    -- Thanks NullCascade
-    mwse.memory.writeBytes({address = 0x775148, bytes = keys[layout].lowercase})
-    mwse.memory.writeBytes({address = 0x775248, bytes = keys[layout].uppercase})
+    if keys[layout] and (#keys[layout].lowercase == 256 and #keys[layout].uppercase == 256) then
+        -- Thanks NullCascade
+        mwse.memory.writeBytes({address = 0x775148, bytes = keys[layout].lowercase})
+        mwse.memory.writeBytes({address = 0x775248, bytes = keys[layout].uppercase})
+    else
+        local message = "Bad keys.lua file, please re-install."
+        this.log(message)
+        tes3.messageBox(string.format("(%s) %s", this.modName, message))
+    end
 end
 
 return this