diff --git a/ESP32-IDF_Temperture-Node-v2/main/mqttronix.c b/ESP32-IDF_Temperture-Node-v2/main/mqttronix.c
index 99dda1bc6..b25c2ac94 100644
--- a/ESP32-IDF_Temperture-Node-v2/main/mqttronix.c
+++ b/ESP32-IDF_Temperture-Node-v2/main/mqttronix.c
@@ -147,5 +147,5 @@ void mqttronix_update_humidity (float humidity) {
 }
 void mqttronix_update_pressure (float pressure) { 
     pressure_value = pressure;
-    snprintf(pressure_str, sizeof(pressure_str), "%.02f", pressure_str);
+    snprintf(pressure_str, sizeof(pressure_str), "%.02f", pressure_value);
 }
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