diff --git a/internal/llm/agent/agent.go b/internal/llm/agent/agent.go
index b1d9dd8c98420aa963f6e6fa5df8fbefc5a632b2..02ff02c2df5c85b688b892971472e22fa4aed0b7 100644
--- a/internal/llm/agent/agent.go
+++ b/internal/llm/agent/agent.go
@@ -343,7 +343,7 @@ func (a *agent) Run(ctx context.Context, sessionID string, content string, attac
 	if !a.Model().SupportsImages && attachments != nil {
 		attachments = nil
 	}
-	events := make(chan AgentEvent)
+	events := make(chan AgentEvent, 1)
 	if a.IsSessionBusy(sessionID) {
 		existing, ok := a.promptQueue.Get(sessionID)
 		if !ok {