diff --git a/Lib/idlelib/idlever.py b/Lib/idlelib/idlever.py
index b80c479..563d933 100644
--- a/Lib/idlelib/idlever.py
+++ b/Lib/idlelib/idlever.py
@@ -1 +1,4 @@
-IDLE_VERSION = "2.7.10rc1"
+"""Unused by Idle: there is no separate Idle version anymore.
+Kept only for possible existing extension use."""
+from sys import version
+IDLE_VERSION = version[:version.index(' ')]