diff --git a/aio/content/guide/developer-guide-overview.md b/aio/content/guide/developer-guide-overview.md
index b9de664ac37..2000ce4532f 100644
--- a/aio/content/guide/developer-guide-overview.md
+++ b/aio/content/guide/developer-guide-overview.md
@@ -50,7 +50,7 @@ To get the most out of these developer guides, you should review the following t
Service Workers and PWA
-