diff --git a/lib/net/parser.js b/lib/net/parser.js
index 9a54a83e..9fd3eda3 100644
--- a/lib/net/parser.js
+++ b/lib/net/parser.js
@@ -133,14 +133,18 @@ Parser.prototype.parseHeader = function parseHeader(data) {
 
   magic = data.readUInt32LE(0, true);
 
-  if (magic !== this.network.magic)
-    return this.error('Invalid magic value: %s.', util.hex32(magic));
+  if (magic !== this.network.magic) {
+    this.error('Invalid magic value: %s.', util.hex32(magic));
+    return null;
+  }
 
   // Count length of the cmd
   for (i = 0; data[i + 4] !== 0 && i < 12; i++);
 
-  if (i === 12)
-    return this.error('Non NULL-terminated command.');
+  if (i === 12) {
+    this.error('Non NULL-terminated command.');
+    return null;
+  }
 
   cmd = data.toString('ascii', 4, 4 + i);
 
@@ -149,7 +153,7 @@ Parser.prototype.parseHeader = function parseHeader(data) {
   if (size > common.MAX_MESSAGE) {
     this.waiting = 24;
     this.error('Packet length too large: %dmb.', util.mb(size));
-    return;
+    return null;
   }
 
   this.waiting = size;