diff --git a/include/rcon.h b/include/rcon.h
index 8d575aa..6b8e0fe 100644
--- a/include/rcon.h
+++ b/include/rcon.h
@@ -1,13 +1,6 @@
 #pragma once
 
-#include <iostream>
 #include <string>
-#include <netinet/in.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <thread>
 #include <functional>
 
 #define DEFAULT_TIMEOUT 4
@@ -124,13 +117,7 @@ class rcon {
 	 */
 	rcon_packet read_packet();
     
-	inline const size_t read_packet_length() {
-		unsigned char* buffer = new unsigned char[4]{0};
-		::recv(sock, buffer, 4, 0);
-		const size_t len = byte32_to_int(buffer);
-		delete[] buffer;
-		return len;
-	}
+	const size_t read_packet_length();
 
 	inline const size_t byte32_to_int(unsigned char* buffer) {
 		return static_cast<size_t>(buffer[0] | buffer[1] << 8 | buffer[2] << 16 | buffer[3] << 24);
diff --git a/src/rcon.cpp b/src/rcon.cpp
index 7c962dc..d80fa99 100644
--- a/src/rcon.cpp
+++ b/src/rcon.cpp
@@ -1,6 +1,13 @@
 #include "../include/rcon.h"
 
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <iostream>
 #include <cstring>
+#include <thread>
 
 rcon::rcon(const std::string& addr, const unsigned int _port, const std::string& pass) : address(addr), port(_port), password(pass) {
     
@@ -169,3 +176,11 @@ rcon_packet rcon::read_packet() {
 
 	return {bytes, buffer};
 }
+
+const size_t rcon::read_packet_length() {
+	unsigned char* buffer = new unsigned char[4]{0};
+	::recv(sock, buffer, 4, 0);
+	const size_t len = byte32_to_int(buffer);
+	delete[] buffer;
+	return len;
+}