diff --git a/trie/sync.go b/trie/sync.go
index e609f69e2b..3b7caae5b1 100644
--- a/trie/sync.go
+++ b/trie/sync.go
@@ -157,7 +157,7 @@ type nodeOp struct {
 	hash  common.Hash // hash of the node content (empty for node deletion)
 }
 
-// isDelete indicates if the operation is a database deletion.
+// valid checks whether the node operation is valid.
 func (op *nodeOp) valid() bool {
 	if op.del && len(op.blob) != 0 {
 		return false