diff --git a/tsdb/index/tsi1/file_set.go b/tsdb/index/tsi1/file_set.go
index 5c0f205d81..dc891fbb53 100644
--- a/tsdb/index/tsi1/file_set.go
+++ b/tsdb/index/tsi1/file_set.go
@@ -964,6 +964,7 @@ func (fs *FileSet) buildFilters() error {
 				}
 				files = files[1:]
 			}
+			continue
 		}
 
 		// Build new filter from files at this level.