diff --git a/challenger/challenger.go b/challenger/challenger.go
index 35ee52d..7dedf0b 100644
--- a/challenger/challenger.go
+++ b/challenger/challenger.go
@@ -231,7 +231,9 @@ func (c *Challenger) RegisterQuerier() {
 		if err != nil {
 			return err
 		}
-		return ctx.JSON(*status.Host.Node.Syncing && *status.Child.Node.Syncing)
+		hostSync := status.Host.Node.Syncing != nil && *status.Host.Node.Syncing
+		childSync := status.Child.Node.Syncing != nil && *status.Child.Node.Syncing
+		return ctx.JSON(hostSync || childSync)
 	})
 }
 
diff --git a/executor/querier.go b/executor/querier.go
index 2cacf34..e77bf90 100644
--- a/executor/querier.go
+++ b/executor/querier.go
@@ -74,6 +74,6 @@ func (ex *Executor) RegisterQuerier() {
 		hostSync := status.Host.Node.Syncing != nil && *status.Host.Node.Syncing
 		childSync := status.Child.Node.Syncing != nil && *status.Child.Node.Syncing
 		batchSync := status.BatchSubmitter.Node.Syncing != nil && *status.BatchSubmitter.Node.Syncing
-		return c.JSON(hostSync && childSync && batchSync)
+		return c.JSON(hostSync || childSync || batchSync)
 	})
 }