diff --git a/src/shell/scripts/omp.lua b/src/shell/scripts/omp.lua
index d6a111a33f10..4de0af3d7d54 100644
--- a/src/shell/scripts/omp.lua
+++ b/src/shell/scripts/omp.lua
@@ -7,16 +7,7 @@ if '::UPGRADE::' == 'true' then
 end
 
 -- Cache PID
-
-function generateCustomUUID()
-    local template = 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'
-    return string.gsub(template, '[x]', function(c)
-        local v = math.random(0, 0xf)
-        return string.format('%x', v)
-    end)
-end
-
-os.setenv("POSH_PID", generateCustomUUID())
+os.setenv("POSH_PID", os.getpid())
 
 -- Helper functions