diff --git a/src/network/core/packet.cpp b/src/network/core/packet.cpp
--- a/src/network/core/packet.cpp
+++ b/src/network/core/packet.cpp
@@ -73,6 +73,11 @@ void Packet::PrepareToSend()
 	this->buffer[1] = GB(this->size, 8, 8);
 
 	this->pos  = 0; // We start reading from here
+
+	/* Reallocate the packet as in 99+% of the times we send at most 25 bytes and
+	 * keeping the other 1400+ bytes wastes memory, especially when someone tries
+	 * to do a denial of service attack! */
+	this->buffer = ReallocT(this->buffer, this->size);
 }
 
 /**
diff --git a/src/network/core/tcp.cpp b/src/network/core/tcp.cpp
--- a/src/network/core/tcp.cpp
+++ b/src/network/core/tcp.cpp
@@ -65,11 +65,6 @@ void NetworkTCPSocketHandler::SendPacket
 
 	packet->PrepareToSend();
 
-	/* Reallocate the packet as in 99+% of the times we send at most 25 bytes and
-	 * keeping the other 1400+ bytes wastes memory, especially when someone tries
-	 * to do a denial of service attack! */
-	packet->buffer = ReallocT(packet->buffer, packet->size);
-
 	/* Locate last packet buffered for the client */
 	p = this->packet_queue;
 	if (p == nullptr) {