diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 04d9bb84b79209..47f66fa40b6757 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -3,7 +3,7 @@ Released on 2019-12-16?
 ======================================
 
 
-bpo-38598: Do not try to compile IDLE shell or output windows
+bpo-38598: Do not try to compile IDLE shell or output windows.
 
 
 What's New in IDLE 3.8.0 (since 3.7.0)