diff --git a/Block.js b/Block.js
index 5cae78b..9efa15f 100644
--- a/Block.js
+++ b/Block.js
@@ -64,7 +64,7 @@ function spec(b) {
 
     var txCount = parser.varInt();
 
-    for (i = 0; i < txCount; i++) {
+    for (var i = 0; i < txCount; i++) {
       var tx = new Transaction();
       tx.parse(parser);
       this.txs.push(tx);
diff --git a/Connection.js b/Connection.js
index a50edb5..3558b15 100644
--- a/Connection.js
+++ b/Connection.js
@@ -476,7 +476,7 @@ function spec(b) {
         lock_time: tx.lock_time,
         ins: tx.ins,
         outs: tx.outs,
-	tx: tx,
+	      tx: tx,
       };
 
     case 'getblocks':
diff --git a/Transaction.js b/Transaction.js
index 205ffc5..0cc95bb 100644
--- a/Transaction.js
+++ b/Transaction.js
@@ -553,7 +553,7 @@ function spec(b) {
     var ins = this.ins.map(function (txin) {
       var txinObj = {
         prev_out: {
-          hash: new Buffer(txin.getOutpointHash()).reverse().toString(hex),
+          hash: new Buffer(txin.getOutpointHash()).reverse().toString('hex'),
           n: txin.getOutpointIndex()
         }
       };
diff --git a/const.js b/const.js
index cd6a77e..9edf459 100644
--- a/const.js
+++ b/const.js
@@ -1,7 +1,18 @@
 
-exports.MSG = {
+MSG = {
 	TX:		1,
 	BLOCK:		2,
 	FILTERED_BLOCK:	3,
 };
 
+MSG.to_str = function(t) {
+  switch(t) {
+    case MSG.TX: return 'transaction';
+    case MSG.BLOCK: return 'block';
+    case MSG.FILTERED_BLOCK: return 'filtered block';
+    default: return 'unknown';
+  }
+}
+
+exports.MSG = MSG;
+