diff --git a/src/Main/utils.cpp b/src/Main/utils.cpp
index cedd357..386a520 100644
--- a/src/Main/utils.cpp
+++ b/src/Main/utils.cpp
@@ -2,7 +2,7 @@
 
 #define VALID_TEMPERATURE_MAX (125)
 #define VALID_TEMPERATURE_MIN (-40)
-#define INVALID_TEMPERATURE   (-41)
+#define INVALID_TEMPERATURE   (-1000)
 
 #define VALID_HUMIDITY_MAX    (100)
 #define VALID_HUMIDITY_MIN    (0)