diff --git a/src/Libplanet.RocksDBStore/RocksDBStore.Prune.cs b/src/Libplanet.RocksDBStore/RocksDBStore.Prune.cs
index ae8fa2398b..a235bd9d59 100644
--- a/src/Libplanet.RocksDBStore/RocksDBStore.Prune.cs
+++ b/src/Libplanet.RocksDBStore/RocksDBStore.Prune.cs
@@ -176,7 +176,7 @@ private IEnumerable<BlockHash> IterateIndexesForPrune(Guid chainId)
         private IEnumerable<BlockHash> IterateIndexesInnerForPrune(Guid chainId)
         {
             byte[] prefix = Concat(IndexKeyPrefix, chainId.ToByteArray());
-            foreach (Iterator it in IterateDb(_chainDb, prefix))
+            foreach (Iterator it in IterateDbUnpruned(_chainDb, prefix))
             {
                 byte[] value = it.Value();
                 yield return new BlockHash(value);
diff --git a/src/Libplanet.RocksDBStore/RocksDBStore.cs b/src/Libplanet.RocksDBStore/RocksDBStore.cs
index 208a97af8c..b37479f453 100644
--- a/src/Libplanet.RocksDBStore/RocksDBStore.cs
+++ b/src/Libplanet.RocksDBStore/RocksDBStore.cs
@@ -666,7 +666,7 @@ BlockHash branchpoint
             }
 
             using var batch = new WriteBatch();
-            foreach (Iterator k in IterateDb(_chainDb, IndexKey(destinationChainId)))
+            foreach (Iterator k in IterateDbUnpruned(_chainDb, IndexKey(destinationChainId)))
             {
                 batch.Delete(k.Key());
             }
@@ -1147,7 +1147,7 @@ public override void ForkTxNonces(Guid sourceChainId, Guid destinationChainId)
             try
             {
                 byte[] prefix = TxNonceKey(sourceChainId);
-                foreach (Iterator it in IterateDb(_chainDb, prefix))
+                foreach (Iterator it in IterateDbUnpruned(_chainDb, prefix))
                 {
                     exist = true;
                     Address address = new Address(it.Key().Skip(prefix.Length).ToArray());