diff --git a/aspnet-core/Diagram/Gridlines.md b/aspnet-core/Diagram/Gridlines.md
index 2f7278f2..a3a0eb9d 100644
--- a/aspnet-core/Diagram/Gridlines.md
+++ b/aspnet-core/Diagram/Gridlines.md
@@ -94,7 +94,7 @@ public ActionResult Index()
 
 ![](Gridlines_images/Gridlines_img2.png)
 
-# Snapping
+## Snapping
 
 ## Snap To Lines