diff --git a/cmd/olliesrv/internal/agent/dispatch.go b/cmd/olliesrv/internal/agent/dispatch.go
index 6c21c86..f8ea57d 100644
--- a/cmd/olliesrv/internal/agent/dispatch.go
+++ b/cmd/olliesrv/internal/agent/dispatch.go
@@ -251,7 +251,7 @@ func (ag *Agent) execOne(ctx context.Context, call backend.ToolCall) (toolResult
 				result = fmt.Sprintf("error: background exec: %v", err)
 				isErr = true
 			} else {
-				result = fmt.Sprintf("<system-proc-background>\nid=%d cmd=%q\nProcess running in background. Do NOT sleep, poll, or wait. Continue with other work — output will be injected automatically when available.\n</system-proc-background>", pid, cmdDesc)
+				result = fmt.Sprintf("<system-proc-background>\nid=%d cmd=%q\nProcess running in background. Do NOT sleep, poll, or wait. Continue with other work — output will be injected automatically when the agent is IDLE (not making tool calls).\n</system-proc-background>", pid, cmdDesc)
 				// Notify proc.start via callback
 				if ag.onProcStart != nil {
 					ag.onProcStart(ag.id, pid, call.Name, cmdDesc)