diff --git a/README.md b/README.md
index 0cad64e9..277c53a1 100644
--- a/README.md
+++ b/README.md
@@ -224,7 +224,7 @@ Bluetooth low energy service UUID 0xFD6F, used by Google/Apple COVID-19 Exposure
 	#define MACFILTER		0	// disable MAC filter
 	#define BLECOUNTER		1	// enable bluetooth sniffing
 	#define WIFICOUNTER		0	// disable wifi sniffing (improves BLE scan speed)
-	#define HAS_SENSOR_1		1	// optional: transmit ENS counter data to server
+	#define HAS_SENSOR_1		1	// optional, in board's hal file: transmit ENS counter data to server
 
 # SD-card
 
diff --git a/src/paxcounter_orig.conf b/src/paxcounter_orig.conf
index 3440d8fc..cbb68685 100644
--- a/src/paxcounter_orig.conf
+++ b/src/paxcounter_orig.conf
@@ -33,11 +33,6 @@
 #define COUNT_ENS                       1       // count found number of devices which advertise Exposure Notification Service
                                                 // set to 1 if you want to enable this function [default=0]
 
-// for additional sensors (added by some user)
-#define HAS_SENSOR_1                    1       // set to 1 to enable data transfer of user sensor #1 (also used as ENS counter) [default=0]
-#define HAS_SENSOR_2                    0       // set to 1 to enable data transfer of user sensor #2 [default=0]
-#define HAS_SENSOR_3                    0       // set to 1 to enable data transfer of user sensor #3 [default=0]
-
 /* Note: guide for setting bluetooth parameters
 *
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