diff --git a/similar/main/net_udp.cpp b/similar/main/net_udp.cpp
index 4a21bee39..0d2a8638c 100644
--- a/similar/main/net_udp.cpp
+++ b/similar/main/net_udp.cpp
@@ -425,7 +425,7 @@ static int udp_tracker_unregister()
 static int udp_tracker_register()
 {
 	// Variables
-	int iLen = 14;
+	int iLen = 15;
 	ubyte pBuf[iLen];
 	
 	// Reset the last tracker message