diff --git a/PRIMER.md b/PRIMER.md
index 93079f6a93..ac2864222a 100644
--- a/PRIMER.md
+++ b/PRIMER.md
@@ -279,7 +279,7 @@ Polymer({
 });
 ```
 
-Remember that the fields assigned to `count`, such as `readOnly` and `notify` don't do anything by themselves, it requires other features to give them life, and may depend on which layer of Polymer is in use.
+Remember that the fields assigned to `count` - such as `readOnly` and `notify` don't do anything by themselves - it requires other features to give them life, and may depend on which layer of Polymer is in use.
 
 <a name="attribute-deserialization"></a>
 ## Attribute deserialization