diff --git a/vectors.Rmd b/vectors.Rmd
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@@ -581,10 +581,10 @@ The most important S3 generic is `print()`: it controls how the object is printe
 
 Atomic vectors and lists are the building blocks for other important vector types like factors and dates. I call these __augmented vectors__, because they are vectors with additional __attributes__, including class. Because augmented vectors have a class, they behave differently to the atomic vector on which they are built. In this book, we make use of four important augmented vectors:
 
-* Factors.
+* Factors
+* Dates 
 * Date-times
-* Times.
-* Tibbles.
+* Tibbles
 
 These are described below.