diff --git a/nanovna.h b/nanovna.h
index fc3b1cd..1068946 100644
--- a/nanovna.h
+++ b/nanovna.h
@@ -1835,7 +1835,7 @@ int plot_printf(char *str, int, const char *fmt, ...);
 #define define_to_STR(x)  STR1(x)
 
 // sa_core.c
-#define MIN_RSSI_VALUE  ( -150 )
+#define MIN_RSSI_VALUE  ( -160 )
 typedef uint8_t  deviceRSSI_t;
 typedef int16_t  pureRSSI_t;
 extern int current_index;