diff --git a/blockstore/splitstore/markset_badger.go b/blockstore/splitstore/markset_badger.go
index 1593b150d..53aea25c9 100644
--- a/blockstore/splitstore/markset_badger.go
+++ b/blockstore/splitstore/markset_badger.go
@@ -48,6 +48,7 @@ func NewBadgerMarkSetEnv(path string) (MarkSetEnv, error) {
 }
 
 func (e *BadgerMarkSetEnv) create(name string, sizeHint int64) (*BadgerMarkSet, error) {
+	name += ".tmp"
 	path := filepath.Join(e.path, name)
 
 	db, err := openTransientBadgerDB(path)