diff --git a/snapshots/manager.go b/snapshots/manager.go
index 8d10dcc9c713..dbca39ea2be7 100644
--- a/snapshots/manager.go
+++ b/snapshots/manager.go
@@ -70,6 +70,9 @@ var ErrOptsZeroSnapshotInterval = errors.New("snaphot-interval must not be 0")
 
 // NewManager creates a new manager.
 func NewManager(store *Store, opts types.SnapshotOptions, multistore types.Snapshotter, extensions map[string]types.ExtensionSnapshotter, logger log.Logger) *Manager {
+	if extensions == nil {
+		extensions = map[string]types.ExtensionSnapshotter{}
+	}
 	return &Manager{
 		store:      store,
 		opts:       opts,