diff --git a/src/kubo/utils.ts b/src/kubo/utils.ts
index 2a7c44e9..e8406a51 100644
--- a/src/kubo/utils.ts
+++ b/src/kubo/utils.ts
@@ -67,7 +67,7 @@ export function buildStartArgs (options: KuboStartOptions): string[] {
   }
 
   if (options.pubsub === true) {
-    args.push('---enable-pubsub-experiment')
+    args.push('--enable-pubsub-experiment')
   }
 
   if (options.ipnsPubsub === true) {