diff --git a/library/waku_thread/inter_thread_communication/requests/debug_node_request.nim b/library/waku_thread/inter_thread_communication/requests/debug_node_request.nim
index 89ccf064eb..dbe80b29b2 100644
--- a/library/waku_thread/inter_thread_communication/requests/debug_node_request.nim
+++ b/library/waku_thread/inter_thread_communication/requests/debug_node_request.nim
@@ -1,5 +1,5 @@
 import std/json
-import chronicles, chronos, results, eth/p2p/discoveryv5/enr
+import chronicles, chronos, results, eth/p2p/discoveryv5/enr, strutils
 import ../../../../waku/factory/waku, ../../../../waku/node/waku_node
 
 type DebugNodeMsgType* = enum
@@ -28,7 +28,8 @@ proc process*(
 
   case self.operation
   of RETRIEVE_LISTENING_ADDRESSES:
-    return ok($(%*waku.node.getMultiaddresses()))
+    ## returns a comma-separated string of the listen addresses
+    return ok(waku.node.getMultiaddresses().join(","))
   of RETRIEVE_MY_ENR:
     return ok(waku.node.enr.toURI())
 
diff --git a/library/waku_thread/inter_thread_communication/requests/discovery_request.nim b/library/waku_thread/inter_thread_communication/requests/discovery_request.nim
index 281f7cbf0d..1ccf8ff376 100644
--- a/library/waku_thread/inter_thread_communication/requests/discovery_request.nim
+++ b/library/waku_thread/inter_thread_communication/requests/discovery_request.nim
@@ -1,5 +1,5 @@
 import std/json
-import chronos, chronicles, results, libp2p/multiaddress
+import chronos, chronicles, results, strutils, libp2p/multiaddress
 import
   ../../../../waku/factory/waku,
   ../../../../waku/discovery/waku_dnsdisc,
@@ -129,7 +129,8 @@ proc process*(
       error "GET_BOOTSTRAP_NODES failed", error = error
       return err($error)
 
-    return ok($(%*nodes))
+    ## returns a comma-separated string of bootstrap nodes' multiaddresses
+    return ok(nodes.join(","))
   of UPDATE_DISCV5_BOOTSTRAP_NODES:
     updateDiscv5BootstrapNodes($self[].nodes, waku).isOkOr:
       error "UPDATE_DISCV5_BOOTSTRAP_NODES failed", error = error