diff --git a/aio/content/guide/service-worker-config.md b/aio/content/guide/service-worker-config.md
index fefb619503..c2273b28ca 100644
--- a/aio/content/guide/service-worker-config.md
+++ b/aio/content/guide/service-worker-config.md
@@ -179,7 +179,7 @@ For example, the string `5s30u` will translate to five seconds and 30 millisecon
 
 The Angular service worker can use either of two caching strategies for data resources.
 
-* `performance`, the default, optimizes for responses that are as fast as possible. If a resource exists in the cache, the cached version is used. This allows for some staleness, depending on the `maxAge`, in exchange for better performance. This is suitable for resources that don't change often; for example, user avatar images.
+* `performance`, the default, optimizes for responses that are as fast as possible. If a resource exists in the cache, the cached version is used, and no network request is made. This allows for some staleness, depending on the `maxAge`, in exchange for better performance. This is suitable for resources that don't change often; for example, user avatar images.
 
 * `freshness` optimizes for currency of data, preferentially fetching requested data from the network. Only if the network times out, according to `timeout`, does the request fall back to the cache. This is useful for resources that change frequently; for example, account balances.