diff --git a/svelte-app/src/lib/symbol-config.ts b/svelte-app/src/lib/symbol-config.ts
index cb11d42..9037577 100644
--- a/svelte-app/src/lib/symbol-config.ts
+++ b/svelte-app/src/lib/symbol-config.ts
@@ -3,7 +3,7 @@
 export const EPC_CONFIG = {
   iconFile: '/symbols/epc_icon.svg',
   leftBox: { x: 0, y: 0, w: 26, h: 20 },
-  rightBox: { w: 10, h: 20 },
+  rightBox: { w: 20, h: 10 },
   lineWidth: 1.5,
   defaultWaypoints: [
     { x: 26, y: 10 },   // exit from left box center-right