diff --git a/trie/triedb/pathdb/database.go b/trie/triedb/pathdb/database.go
index dc64414e9b52..a9d9a81b8d05 100644
--- a/trie/triedb/pathdb/database.go
+++ b/trie/triedb/pathdb/database.go
@@ -431,6 +431,9 @@ func (db *Database) Initialized(genesisRoot common.Hash) bool {
 			inited = true
 		}
 	})
+	if !inited {
+		inited = rawdb.ReadSnapSyncStatusFlag(db.diskdb) != rawdb.StateSyncUnknown
+	}
 	return inited
 }
 
diff --git a/trie/triedb/pathdb/history.go b/trie/triedb/pathdb/history.go
index 6e3f3faaedce..9cfdef62f767 100644
--- a/trie/triedb/pathdb/history.go
+++ b/trie/triedb/pathdb/history.go
@@ -576,8 +576,10 @@ func truncateFromHead(db ethdb.Batcher, freezer *rawdb.ResettableFreezer, nhead
 		return 0, err
 	}
 	// Ensure that the truncation target falls within the specified range.
-	if ohead < nhead || nhead < otail {
-		return 0, fmt.Errorf("out of range, tail: %d, head: %d, target: %d", otail, ohead, nhead)
+	if nhead != 0 { // truncating to zero is always possible
+		if ohead < nhead || nhead < otail {
+			return 0, fmt.Errorf("out of range, tail: %d, head: %d, target: %d", otail, ohead, nhead)
+		}
 	}
 	// Short circuit if nothing to truncate.
 	if ohead == nhead {