diff --git a/pkg/series/storeapi/storeapi.go b/pkg/series/storeapi/storeapi.go
index eef81be..c7fef1f 100644
--- a/pkg/series/storeapi/storeapi.go
+++ b/pkg/series/storeapi/storeapi.go
@@ -91,6 +91,10 @@ func (i *iterator) Next() bool {
 	}
 
 	i.currentSeries = seriesResp.GetSeries()
+	if i.currentSeries == nil {
+		i.err = errors.Errorf("Received nil series from Series Response")
+		return false
+	}
 	return true
 }