diff --git a/src/classes/PocketMinecraftServer.php b/src/classes/PocketMinecraftServer.php
index 33ced2099..636015d0c 100644
--- a/src/classes/PocketMinecraftServer.php
+++ b/src/classes/PocketMinecraftServer.php
@@ -535,10 +535,10 @@ class PocketMinecraftServer{
 					}
 					$version = $data[1];
 					$size = strlen($data[2]);
-					if($version !== 5){
-						console("[DEBUG] Incorrect protocol #$version from ".$packet["ip"].":".$packet["port"], true, true, 2);
+					if($version !== CURRENT_STRUCTURE){
+						console("[DEBUG] Incorrect structure #$version from ".$packet["ip"].":".$packet["port"], true, true, 2);
 						$this->send(0x1a, array(
-							CURRENT_PROTOCOL,
+							CURRENT_STRUCTURE,
 							MAGIC,
 							$this->serverID,
 						), false, $packet["ip"], $packet["port"]);
diff --git a/src/common/config.php b/src/common/config.php
index 5d3115a2a..94b142852 100644
--- a/src/common/config.php
+++ b/src/common/config.php
@@ -39,5 +39,6 @@ define("LOG", true);
 define("MAGIC", "\x00\xff\xff\x00\xfe\xfe\xfe\xfe\xfd\xfd\xfd\xfd\x12\x34\x56\x78");
 define("TEST_MD5", "d0ca3786e53b615bb4fb9f5094d5c9a7");
 define("MAJOR_VERSION", "Alpha_1.1dev");
+define("CURRENT_STRUCTURE", 5);
 define("CURRENT_PROTOCOL", 9);
 define("CURRENT_MINECRAFT_VERSION", "v0.6.0 alpha");
\ No newline at end of file