diff --git a/imports/addCommand/server.lua b/imports/addCommand/server.lua
index 4fd5057..3144417 100644
--- a/imports/addCommand/server.lua
+++ b/imports/addCommand/server.lua
@@ -46,8 +46,12 @@ local function parseArguments(source, args, raw, params)
                 value = false
             end
         elseif param.type == 'longString' and i == paramsNum then
-            local start = raw:find(arg, 1, true)
-            value = start and raw:sub(start)
+            if arg then
+                local start = raw:find(arg, 1, true)
+                value = start and raw:sub(start)
+            else
+                value = nil
+            end
         else
             value = arg
         end