diff --git a/cowmesh_router_iperf_test.py b/cowmesh_router_iperf_test.py
index 81674d8..00a88b5 100644
--- a/cowmesh_router_iperf_test.py
+++ b/cowmesh_router_iperf_test.py
@@ -117,7 +117,7 @@ class CowmeshRouterIperfTester:
 
         # destination nodes includes all routers plus an additional node in bangalore
         # to test the connection the public internet
-        destination_nodes = NODES + "bangalore"
+        destination_nodes = NODES + ["bangalore"]
 
         for node_a in NODES:
             for node_b in destination_nodes: