diff --git a/main.go b/main.go
index 939d597..9d5d21e 100644
--- a/main.go
+++ b/main.go
@@ -279,6 +279,9 @@ func (that *Offloader) Do() {
 		} else {
 			rerun := false
 			for k, q := range that.Sets {
+				if that.Queues[q] == nil {
+					continue
+				}
 				key := fmt.Sprintf("%s:%s", that.Name, k)
 				scard, err := scards[k].Result()
 				if err != nil {