diff --git a/src/mqtt.cpp b/src/mqtt.cpp
index 2c2c085..13e2d25 100644
--- a/src/mqtt.cpp
+++ b/src/mqtt.cpp
@@ -6,7 +6,7 @@
 
 #define MQTT_CONNECT_TIMEOUT_MILLISECONDS   5000
 
-#define MQTT_MAX_MESSAGE_AGE_MILLIS         5000
+#define MQTT_MAX_MESSAGE_AGE_MILLIS         11000
 
 #define PHOTOVOLTAIC_POWER                  "openDTU/pv/ac/power"