diff --git a/spec/README.md b/spec/README.md
index cc616fc04..6fde9626e 100644
--- a/spec/README.md
+++ b/spec/README.md
@@ -4,5 +4,5 @@ This directory contains Chronicle Map specification.
 
 This is yet incomplete, work-in-progress document.
 
- - [Purposes of Chronicle Map specification](0_purposes.md)
- - [# Chronicle Map design goals, premises and guarantees](1_design_goals.md)
\ No newline at end of file
+ - [Rational behind Chronicle Map specification](0_purposes.md)
+ - [# Chronicle Map design goals, assumptions and guarantees](1_design_goals.md)