diff --git a/lib/bcoin/mempool.js b/lib/bcoin/mempool.js
index 00455106..df609ae7 100644
--- a/lib/bcoin/mempool.js
+++ b/lib/bcoin/mempool.js
@@ -159,6 +159,10 @@ Mempool.prototype.addBlock = function addBlock(block, callback, force) {
   utils.forEachSerial(block.txs, function(tx, next) {
     var hash = tx.hash('hex');
     var copy;
+
+    if (tx.isCoinbase())
+      return next();
+
     self.getTX(hash, function(err, existing) {
       if (err)
         return callback(err);
@@ -195,6 +199,10 @@ Mempool.prototype.removeBlock = function removeBlock(block, callback, force) {
 
   utils.forEachSerial(block.txs.slice().reverse(), function(tx, next) {
     var copy;
+
+    if (tx.isCoinbase())
+      return next();
+
     self.hasTX(tx.hash('hex'), function(err, result) {
       if (err)
         return next(err);