diff --git a/src/paxcounter.conf b/src/paxcounter.conf
index c98cc7b9..b220126e 100644
--- a/src/paxcounter.conf
+++ b/src/paxcounter.conf
@@ -24,6 +24,15 @@
 #define BLESCANWINDOW                   80      // [milliseconds] scan window, see below, 3 .. 10240, default 80ms
 #define BLESCANINTERVAL                 80      // [illiseconds] scan interval, see below, 3 .. 10240, default 80ms = 100% duty cycle
 
+#define COUNT_CWA                       1       // count found copies of the Corona Warn App (CWA)
+                                                // uncomment this line if you do not want to count these apps
+
+// for additional sensors (added by some user)
+#define HAS_SENSOR_1                    1       // needed because we use SENSOR1_DATA for the CWA-data
+#define HAS_SENSOR_2                    0       // not used 
+#define HAS_SENSOR_3                    0       // not used
+#define HAS_SENSORS     (HAS_SENSOR_1 || HAS_SENSOR_2 || HAS_SENSOR_3)   // to simplify things
+
 /* Note: guide for setting bluetooth parameters
 *
 * |< Scan Window >       |< Scan Window >       | ... |< Scan Window >       |