diff --git a/lib/database.js b/lib/database.js
index 40761ff..f183864 100644
--- a/lib/database.js
+++ b/lib/database.js
@@ -85,23 +85,27 @@ function update_address(hash, blockheight, txid, amount, type, cb) {
     if (err) {
       return cb(err);
     } else {
-      AddressTx.findOneAndUpdate({a_id: hash, txid: txid}, {
-        $set: {
-          a_id: hash,
-          balance: address.balance,
-          blockindex: blockheight,
-          txid: txid
-        }
-      }, {
-        new: true,
-        upsert: true
-      }, function (err,addresstx) {
-        if (err) {
-          return cb(err);
-        } else {
-          return cb();
-        }
-      });
+      if ( hash != 'coinbase' ) {
+        AddressTx.findOneAndUpdate({a_id: hash, txid: txid}, {
+          $set: {
+            a_id: hash,
+            blockindex: blockheight,
+            txid: txid,
+            amount: address.balance
+          }
+        }, {
+          new: true,
+          upsert: true
+        }, function (err,addresstx) {
+          if (err) {
+            return cb(err);
+          } else {
+            return cb();
+          }
+        });
+      } else {
+        return cb();
+      }
     }
   });
 }
diff --git a/models/addresstx.js b/models/addresstx.js
index 9e873d7..c1fdb10 100644
--- a/models/addresstx.js
+++ b/models/addresstx.js
@@ -5,7 +5,7 @@ var AddressTXSchema = new Schema({
   a_id: { type: String, index: true},
   blockindex: {type: Number, default: 0, index: true},
   txid: { type: String, lowercase: true, index: true},
-  balance: { type: Number, default: 0}
+  amount: { type: Number, default: 0}
 }, {id: false});
 
 module.exports = mongoose.model('AddressTx', AddressTXSchema);
\ No newline at end of file