diff --git a/tls/etc/tls.urm.puml b/tls/etc/tls.urm.puml
deleted file mode 100644
index 6425b7d33..000000000
--- a/tls/etc/tls.urm.puml
+++ /dev/null
@@ -1,28 +0,0 @@
-@startuml
-package com.iluwatar.tls {
-  class App {
-    ~ dateList : List<Date> {static}
-    ~ exceptionList : List<String> {static}
-    + App()
-    + main(args : String[]) {static}
-  }
-  class AppUgly {
-    ~ dateList : List<Date> {static}
-    ~ exceptionList : List<String> {static}
-    + AppUgly()
-    + main(args : String[]) {static}
-  }
-  class DateFormatRunnable {
-    - dateValue : String
-    - df : ThreadLocal<DateFormat>
-    + DateFormatRunnable(inDateFormat : String, inDateValue : String)
-    + run()
-  }
-  class DateFormatUglyRunnable {
-    - dateValue : String
-    - df : DateFormat
-    + DateFormatUglyRunnable(inDateFormat : String, inDateValue : String)
-    + run()
-  }
-}
-@enduml
\ No newline at end of file