diff --git a/packages/tests/src/node/node.ts b/packages/tests/src/node/node.ts
index c05dec5582..5cd8c85d14 100644
--- a/packages/tests/src/node/node.ts
+++ b/packages/tests/src/node/node.ts
@@ -210,14 +210,13 @@ export class NimGoNode {
   }
 
   async ensureSubscriptions(
-    pubsubTopics: [string] = [DefaultPubSubTopic]
+    pubsubTopics: string[] = [DefaultPubSubTopic]
   ): Promise<boolean> {
     this.checkProcess();
 
-    return this.rpcCall<boolean>(
-      "post_waku_v2_relay_v1_subscriptions",
+    return this.rpcCall<boolean>("post_waku_v2_relay_v1_subscriptions", [
       pubsubTopics
-    );
+    ]);
   }
 
   async sendMessage(
diff --git a/packages/tests/tests/light-push/custom_pubsub.node.spec.ts b/packages/tests/tests/light-push/custom_pubsub.node.spec.ts
index fa36bad14d..23ee24240c 100644
--- a/packages/tests/tests/light-push/custom_pubsub.node.spec.ts
+++ b/packages/tests/tests/light-push/custom_pubsub.node.spec.ts
@@ -25,6 +25,8 @@ describe("Waku Light Push [node only] - custom pubsub topic", function () {
       nwaku,
       customPubSubTopic
     );
+
+    await nwaku.ensureSubscriptions([customPubSubTopic]);
   });
 
   this.afterEach(async function () {
diff --git a/packages/tests/tests/light-push/index.spec.ts b/packages/tests/tests/light-push/index.spec.ts
index e43207bd9f..db2e29680b 100644
--- a/packages/tests/tests/light-push/index.spec.ts
+++ b/packages/tests/tests/light-push/index.spec.ts
@@ -34,6 +34,8 @@ describe("Waku Light Push [node only]", function () {
       nwaku,
       DefaultPubSubTopic
     );
+
+    await nwaku.ensureSubscriptions();
   });
 
   this.afterEach(async function () {