diff --git a/lang/python/docs/Short_History.org b/lang/python/docs/Short_History.org
index f684f0a7..31b7d446 100644
--- a/lang/python/docs/Short_History.org
+++ b/lang/python/docs/Short_History.org
@@ -51,7 +51,7 @@ return to the source.  This is a short explanation of that journey.
 
 ** Coming full circle
    :PROPERTIES:
-   :CUSTOM_ID: ouroboros 
+   :CUSTOM_ID: ouroboros
    :END:
 
    In 2015 Ben McGinnes approached Martin about a Python 3 version,