diff --git a/main/analog.c b/main/analog.c
index a167383..4029e92 100644
--- a/main/analog.c
+++ b/main/analog.c
@@ -25,7 +25,7 @@ static void analog_service(void *arg);
 
 static TaskHandle_t hAnalog;
 
-#define DEFAULT_VREF 1100 // TODO try to find the exact value
+#define DEFAULT_VREF 1095
 #define NO_OF_SAMPLES 128
 
 void analog_init() {