diff --git a/lib/net/parser.js b/lib/net/parser.js
index 1db15fb5..81501b99 100644
--- a/lib/net/parser.js
+++ b/lib/net/parser.js
@@ -131,14 +131,15 @@ Parser.prototype.parse = function parse(data) {
     return;
   }
 
-  checksum = crypto.checksum(data).readUInt32LE(0, true);
+  checksum = crypto.hash256(data).readUInt32LE(0, true);
 
   if (checksum !== this.header.checksum) {
     this.waiting = 24;
     this.header = null;
     return this.error(
       'Invalid checksum: %d != %d',
-      checksum, this.header.checksum);
+      utils.hex32(checksum),
+      utils.hex32(this.header.checksum));
   }
 
   try {
@@ -167,7 +168,7 @@ Parser.prototype.parseHeader = function parseHeader(data) {
   magic = data.readUInt32LE(0, true);
 
   if (magic !== this.network.magic)
-    return this.error('Invalid magic value: %s.', magic.toString(16));
+    return this.error('Invalid magic value: %s.', utils.hex32(magic));
 
   // Count length of the cmd
   for (i = 0; data[i + 4] !== 0 && i < 12; i++);