diff --git a/apps/optical/src/main/resources/demo-3-roadm-2-ps.json b/apps/optical/src/main/resources/demo-3-roadm-2-ps.json
index d4f4a14..05c4124 100644
--- a/apps/optical/src/main/resources/demo-3-roadm-2-ps.json
+++ b/apps/optical/src/main/resources/demo-3-roadm-2-ps.json
@@ -94,7 +94,7 @@
                 "port2": 11
             },
             "type": "pktOptLink"
-        },
+        }
 
     ]
 }