diff --git a/src/C++/Socket/main.cpp b/src/C++/Socket/main.cpp
index 999669a..6a70d41 100644
--- a/src/C++/Socket/main.cpp
+++ b/src/C++/Socket/main.cpp
@@ -22,7 +22,7 @@ int main() {
   connOpts.set_clean_session(true);
   connOpts.set_user_name("ishak");
   connOpts.set_password("kobuki");
-  connOpts.set_mqtt_version(MQTTVERSION_5); // Stel de MQTT-versie in (bijv. MQTT 5.0)
+  connOpts.set_mqtt_version(MQTTVERSION_3_1_1);  // Voor MQTT 3.1.1
 
   try {
     std::cout << "Verbinden met broker..." << std::endl;
diff --git a/src/Python/flask/web/app.py b/src/Python/flask/web/app.py
index f6f0d71..d048d64 100644
--- a/src/Python/flask/web/app.py
+++ b/src/Python/flask/web/app.py
@@ -8,6 +8,7 @@ mqtt_client = mqtt.Client()
 # Verbinding maken met de Raspberry Pi (broker)
 mqtt_client.username_pw_set("ishak", "kobuki")
 mqtt_client.connect("ishakpi.ddns.net", 1883, 60)
+client = mqtt.Client(protocol=mqtt.MQTTv311)
 
 @app.route('/')
 def index():