diff --git a/govc/vm/snapshot/tree.go b/govc/vm/snapshot/tree.go
index edc35a476..8fb8e3533 100644
--- a/govc/vm/snapshot/tree.go
+++ b/govc/vm/snapshot/tree.go
@@ -85,6 +85,8 @@ func (cmd *tree) Process(ctx context.Context) error {
 
 func (cmd *tree) write(level int, parent string, pref *types.ManagedObjectReference, st []types.VirtualMachineSnapshotTree) {
 	for _, s := range st {
+		s := s // avoid implicit memory aliasing
+
 		sname := s.Name
 
 		if cmd.fullPath && parent != "" {