diff --git a/doc/src/manual/types.md b/doc/src/manual/types.md
index 430a006c67788..3510dfe7a7042 100644
--- a/doc/src/manual/types.md
+++ b/doc/src/manual/types.md
@@ -57,9 +57,9 @@ kinds of programming, however, become clearer, simpler, faster and more robust w
 The `::` operator can be used to attach type annotations to expressions and variables in programs.
 There are two primary reasons to do this:
 
-1. As an assertion to help confirm that your program works the way you expect,
+1. As an assertion to help confirm that your program works the way you expect, and
 2. To provide extra type information to the compiler, which can then improve performance in some
-   cases
+   cases.
 
 When appended to an expression computing a value, the `::` operator is read as "is an instance
 of". It can be used anywhere to assert that the value of the expression on the left is an instance