diff --git a/doc/design/refactorization.md b/doc/design/refactorization.md
index 715f209d3f74008d386ce3057bb7c2b29cae254d..629422e7743af666b42fd69fbff442ce15bef596 100644
--- a/doc/design/refactorization.md
+++ b/doc/design/refactorization.md
@@ -17,7 +17,7 @@ The goals of refactoring include:
 
 1. A graph is composed of *variables* and *operators*.
 
-1. The description of graphs must be capable of being serialized/deserialized, so that
+1. The description of graphs must be capable of being serialized/deserialized, so that:
 
    1. It can to be sent to the cloud for distributed execution, and
    1. It can be sent to clients for mobile or enterprise deployment.