diff --git a/docs/content/guide/overview.ngdoc b/docs/content/guide/overview.ngdoc
index 91e6e22c..b54113cc 100644
--- a/docs/content/guide/overview.ngdoc
+++ b/docs/content/guide/overview.ngdoc
@@ -88,7 +88,10 @@ concepts which the application developer may face:
| Quantity | Cost |
| Quantity | +Cost | +