diff --git a/server/lib/api/address.js b/server/lib/api/address.js
index ba56875..c12376a 100644
--- a/server/lib/api/address.js
+++ b/server/lib/api/address.js
@@ -47,14 +47,14 @@ module.exports = function AddressAPI(router) {
               logger.log('error',
                 `${err}`);
             }
-            const totalSpent = body.reduce((sum, tx) => sum + tx.outputs.reduce((sum, output) => {
+            const totalReceived = body.reduce((sum, tx) => sum + tx.outputs.reduce((sum, output) => {
               if (output.address === req.params.addr) {
                 return sum + output.value;
               }
               return sum;
             }, 0), 0);
 
-            const totalReceived = body.reduce((sum, tx) => sum + tx.inputs.reduce((sum, input) => {
+            const totalSpent = body.reduce((sum, tx) => sum + tx.inputs.reduce((sum, input) => {
               if (input.coin && input.coin.address === req.params.addr) {
                 return sum + input.coin.value;
               }
diff --git a/server/lib/api/block.js b/server/lib/api/block.js
index c7c9dd6..2ff49ed 100644
--- a/server/lib/api/block.js
+++ b/server/lib/api/block.js
@@ -60,7 +60,6 @@ module.exports = function BlockAPI(router) {
 
   router.get('/blocks', (req, res) => {
     const limit = parseInt(req.query.limit) || MAX_BLOCKS;
-
     getBlock(
       {},
       { height: 1,
@@ -75,6 +74,7 @@ module.exports = function BlockAPI(router) {
         if (err) {
           res.status(501).send();
           logger.log('err', err);
+          return;
         }
 
         res.json({
diff --git a/server/models/transaction.js b/server/models/transaction.js
index ec0af09..73c4f4d 100644
--- a/server/models/transaction.js
+++ b/server/models/transaction.js
@@ -22,8 +22,6 @@ const TransactionSchema = new Schema({
   network:     String,
 });
 
-TransactionSchema.index({ hash:  1 });
-
 const Transaction = mongoose.model('Transaction', TransactionSchema);
 
 module.exports = Transaction;