diff --git a/async-nats/tests/configs/jetstream.conf b/async-nats/tests/configs/jetstream.conf
index 9c08648ec..263488d3c 100644
--- a/async-nats/tests/configs/jetstream.conf
+++ b/async-nats/tests/configs/jetstream.conf
@@ -1,4 +1,5 @@
 jetstream: {
+  strict: true,
   max_mem_store:  64MiB,
   max_file_store: 10GiB
 }
diff --git a/async-nats/tests/configs/jetstream_hub.conf b/async-nats/tests/configs/jetstream_hub.conf
index e07d766ea..754d2be0e 100644
--- a/async-nats/tests/configs/jetstream_hub.conf
+++ b/async-nats/tests/configs/jetstream_hub.conf
@@ -1,3 +1,3 @@
 server_name: HUB
-jetstream: { domain: HUB }
+jetstream: { strict: true, domain: HUB }
 leafnodes { listen: 127.0.0.1:7422 }
diff --git a/async-nats/tests/configs/jetstream_leaf.conf b/async-nats/tests/configs/jetstream_leaf.conf
index 3902b6253..4357eb67b 100644
--- a/async-nats/tests/configs/jetstream_leaf.conf
+++ b/async-nats/tests/configs/jetstream_leaf.conf
@@ -1,5 +1,5 @@
 server_name: LEAF
-jetstream: { domain:LEAF }
+jetstream: { strict: true, domain:LEAF }
 leafnodes {
 	remotes = [ { url: "leaf://127.0.0.1:7422" } ]
 }
diff --git a/async-nats/tests/kv_tests.rs b/async-nats/tests/kv_tests.rs
index 19b670478..a443b5068 100644
--- a/async-nats/tests/kv_tests.rs
+++ b/async-nats/tests/kv_tests.rs
@@ -17,7 +17,7 @@ mod kv {
     use async_nats::{
         jetstream::{
             kv::Operation,
-            stream::{self, DiscardPolicy, Republish, Source, StorageType},
+            stream::{self, DiscardPolicy, External, Republish, Source, StorageType},
         },
         ConnectOptions,
     };
@@ -1008,7 +1008,10 @@ mod kv {
             bucket: "MIRROR".into(),
             mirror: Some(Source {
                 name: "TEST".into(),
-                domain: Some("HUB".into()),
+                external: Some(External {
+                    api_prefix: "$JS.HUB.API".into(),
+                    ..Default::default()
+                }),
                 ..Default::default()
             }),
             ..Default::default()
diff --git a/nats-server/configs/jetstream.conf b/nats-server/configs/jetstream.conf
index 4ecc3d095..a6bf83fb9 100644
--- a/nats-server/configs/jetstream.conf
+++ b/nats-server/configs/jetstream.conf
@@ -1,4 +1,5 @@
 jetstream: {
+  strict: true,
   max_mem_store:  8MiB,
   max_file_store: 10GiB
 }