diff --git a/pep-0410.txt b/pep-0410.txt
index 2581280d6..5c852e5c5 100644
--- a/pep-0410.txt
+++ b/pep-0410.txt
@@ -17,8 +17,8 @@ Decimal becomes the official type for high-resolution timestamps to make Python
 support new functions using a nanosecond resolution without loss of precision.
 
 
-Motivation
-==========
+Rationale
+=========
 
 Python 2.3 introduced float timestamps to support sub-second resolutions.
 os.stat() uses float timestamps by default since Python 2.5. Python 3.3