diff --git a/computers/commands/cd/init.lua b/computers/commands/cd/init.lua
index 4be4e85..925350f 100644
--- a/computers/commands/cd/init.lua
+++ b/computers/commands/cd/init.lua
@@ -1,7 +1,7 @@
 function cd(pos, input, data)
     local path = computers.devicepath .. "/" .. minetest.hash_node_position(pos) .. data.element.pwd
 
-    if input and input ~= "" and not input:find("/") then
+    if input and input ~= "" and not input:find("/") and not input:find("\\") then
         if input == ".." then
             local uri = data.element.pwd:split("/")
             uri[#uri] = nil
diff --git a/computers/commands/mkdir/init.lua b/computers/commands/mkdir/init.lua
index 5ecfb87..dad19f7 100644
--- a/computers/commands/mkdir/init.lua
+++ b/computers/commands/mkdir/init.lua
@@ -1,7 +1,7 @@
 function mkdir(pos, input, data)
     local path = computers.devicepath .. "/" .. minetest.hash_node_position(pos) .. data.element.pwd
 
-    if input and input ~= "" and not input:find("/") then
+    if input and input ~= "" and not input:find("/") and not input:find("\\") then
         minetest.mkdir(path .. "/" .. input)
         return "folder " .. input .. " created"
     else