2 files changed, 5 insertions(+), 2 deletions(-)

M dhall-lang
M lib/dhall/normalize.rb

@@ 1,1 1,1 @@
-Subproject commit 9eb6a8c97a3dba3d91e74bb8284d207403ef294a
+Subproject commit 7a675fa740998895e83ea582e288021122bd48d7

@@ 243,7 243,10 @@ module Dhall
 
 		class RightBiasedRecordMerge
 			def normalize
-				lhs.normalize.merge(rhs.normalize)
+				n_lhs = lhs.normalize
+				n_rhs = rhs.normalize
+				return n_lhs if n_lhs == n_rhs
+				n_lhs.merge(n_rhs)
 			end
 		end