diff --git a/platform/core-concepts.mdx b/platform/core-concepts.mdx
index 57090c59..995b37e6 100644
--- a/platform/core-concepts.mdx
+++ b/platform/core-concepts.mdx
@@ -249,7 +249,7 @@ Smallstep integrates with three types of enforcement points.
 ### Direct (eg. mutual TLS)
 
 ```mermaid
-graph DR
+graph LR
   Device --> Resource
 ```