diff --git a/apps/server/events/bus.ts b/apps/server/events/bus.ts
index bce73ef..6843533 100644
--- a/apps/server/events/bus.ts
+++ b/apps/server/events/bus.ts
@@ -22,8 +22,9 @@ export class EventEmitterBus implements EventBus {
 
   constructor() {
     this.emitter = new EventEmitter();
-    // Allow more listeners for complex systems
-    this.emitter.setMaxListeners(100);
+    // SSE subscriptions register per-event-type listeners (30+ types × N clients).
+    // Listeners are properly cleaned up on disconnect, so disable the warning.
+    this.emitter.setMaxListeners(0);
   }
 
   /**
diff --git a/apps/server/test/integration/real-providers/harness.ts b/apps/server/test/integration/real-providers/harness.ts
index f872229..34545f0 100644
--- a/apps/server/test/integration/real-providers/harness.ts
+++ b/apps/server/test/integration/real-providers/harness.ts
@@ -205,7 +205,7 @@ export async function createRealProviderHarness(
   const accountRepository = new DrizzleAccountRepository(db);
   const initiativeRepository = new DrizzleInitiativeRepository(db);
 
-  // Create event bus with capture (parent class already sets maxListeners to 100)
+  // Create event bus with capture (parent class disables maxListeners warning)
   const eventBus = new CapturingEventBus();
 
   // Create REAL agent manager (not mock!)