diff --git a/esp32/include/ControllerConfiguration.h b/esp32/include/ControllerConfiguration.h
index 3d0ac5e..bff7d2e 100644
--- a/esp32/include/ControllerConfiguration.h
+++ b/esp32/include/ControllerConfiguration.h
@@ -94,7 +94,7 @@
     #define FLOWMETER_PULSES_PER_ML 2.2
 #endif
 
-#define MOIST_SENSOR_MAX_FRQ               60000 // 60kHz (500Hz margin)
+#define MOIST_SENSOR_MAX_FRQ              10000 // 10kHz (as never more then 3000 was measured)
 #define MOIST_SENSOR_MIN_FRQ                500 // 0.5kHz (500Hz margin)
 
 #define ANALOG_SENSOR_MAX_MV                1300 //successive approximation of good range