diff --git a/lib/Server/ReadStream.js b/lib/Server/ReadStream.js
index dbc0126..3c6ce77 100644
--- a/lib/Server/ReadStream.js
+++ b/lib/Server/ReadStream.js
@@ -29,11 +29,10 @@ ReadStream.prototype._transform = function (chunk, encoding, next) {
 		this.pending = Buffer.concat([ this.pending, chunk ]);
 	}
 
-	while (this.pending.length >= 12) {
+	while (this.pending.length >= 6) {
 		var pkg_len = this.pending.readUInt16BE(4) + 6;
 
 		if (this.pending.length < pkg_len) return next();
-		if (pkg_len < 12) return next(); // every function code needs at least 4 additional bytes for "from" and "to". TODO: for WRITE_MULTIPLE_*, we could even check in more detail
 
 		var data = this.pending.slice(8, pkg_len);
 		var pkg  = {
diff --git a/package.json b/package.json
index d78d806..bdc6370 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name"            : "modbus-tcp",
-  "version"         : "0.4.6",
+  "version"         : "0.4.7",
   "description"     : "Modbus TCP/IP",
   "main"            : "lib/Modbus.js",
   "repository"      : "http://github.com/dresende/node-modbus-tcp.git",