diff --git a/internal/rdb/inspect.go b/internal/rdb/inspect.go
index a702554..872cc59 100644
--- a/internal/rdb/inspect.go
+++ b/internal/rdb/inspect.go
@@ -272,13 +272,13 @@ func (r *RDB) EnqueueScheduledTask(id uuid.UUID, score int64) error {
 	return nil
 }
 
-// EnqueueAllScheduledTasks enqueues all tasks from scheduled queue.
+// EnqueueAllScheduledTasks enqueues all tasks from scheduled queue
 // and returns the number of tasks enqueued.
 func (r *RDB) EnqueueAllScheduledTasks() (int64, error) {
 	return r.removeAndEnqueueAll(scheduledQ)
 }
 
-// EnqueueAllRetryTasks enqueues all tasks from retry queue.
+// EnqueueAllRetryTasks enqueues all tasks from retry queue
 // and returns the number of tasks enqueued.
 func (r *RDB) EnqueueAllRetryTasks() (int64, error) {
 	return r.removeAndEnqueueAll(retryQ)
diff --git a/tools/asynqmon/cmd/enqall.go b/tools/asynqmon/cmd/enqall.go
index 0293366..d60bef4 100644
--- a/tools/asynqmon/cmd/enqall.go
+++ b/tools/asynqmon/cmd/enqall.go
@@ -58,7 +58,7 @@ func enqall(cmd *cobra.Command, args []string) {
 	case "dead":
 		n, err = r.EnqueueAllDeadTasks()
 	default:
-		fmt.Printf("error: `asynqmon enqall <queue>` only accepts %v as the argument.\n", enqallValidArgs)
+		fmt.Printf("error: `asynqmon enqall [queue name]` only accepts %v as the argument.\n", enqallValidArgs)
 		os.Exit(1)
 	}
 	if err != nil {
diff --git a/tools/asynqmon/cmd/ls.go b/tools/asynqmon/cmd/ls.go
index 49aaf93..bd94f50 100644
--- a/tools/asynqmon/cmd/ls.go
+++ b/tools/asynqmon/cmd/ls.go
@@ -65,7 +65,7 @@ func ls(cmd *cobra.Command, args []string) {
 	case "dead":
 		listDead(r)
 	default:
-		fmt.Printf("error: `asynqmon ls <queue>` only accepts %v as the argument.\n", lsValidArgs)
+		fmt.Printf("error: `asynqmon ls [queue name]` only accepts %v as the argument.\n", lsValidArgs)
 		os.Exit(1)
 	}
 }