diff --git a/lib/bcoin/chaindb.js b/lib/bcoin/chaindb.js
index 0db97516..29f54a83 100644
--- a/lib/bcoin/chaindb.js
+++ b/lib/bcoin/chaindb.js
@@ -1470,7 +1470,7 @@ ChainDB.prototype._pruneQueue = function _pruneQueue(block, batch, callback) {
       utils.debug('Retroactively pruning txs at height %d.', block.height);
 
     utils.forEachSerial(hashes, function(hash, next) {
-      batch.del('t/q/' + block.height + '/' + hash);
+      batch.del('t/q/' + pad32(block.height) + '/' + hash);
       self._removeTX(hash, batch, next);
     }, callback);
   }