diff --git a/firmware/sensor_wind.ino b/firmware/sensor_wind.ino
index 5462a63..4b366e0 100644
--- a/firmware/sensor_wind.ino
+++ b/firmware/sensor_wind.ino
@@ -2,15 +2,16 @@
 #include "config_user.h"
 #include "config.h"
 
-unsigned int anemometerRotations  = 0;
+volatile unsigned int anemometerRotations  = 0;
 uint32_t     start_meas_wind_time = 0;
 int          interruptNumber;
 
-ICACHE_RAM_ATTR void _anemometerInterrupt()
+void ICACHE_RAM_ATTR _anemometerInterrupt()
 {
   anemometerRotations++;
 #ifdef DEBUG
   Serial.print("*");
+  debug("*");
 #endif
 }
 
@@ -28,6 +29,7 @@ void start_measure_wind()
   start_meas_wind_time = millis();
   anemometerRotations = 0;
   interruptNumber = digitalPinToInterrupt(ANEMOMETER_PIN);
+  attachInterrupt(interruptNumber, _anemometerInterrupt, FALLING);
 }
 
 boolean check_measure_wind_done()
@@ -43,5 +45,8 @@ boolean check_measure_wind_done()
 float measure_wind_result()
 {
   start_meas_wind_time = 0;
+#ifdef DEBUG
+  debug("rotations = " + String((float)anemometerRotations));
+#endif
   return (float)anemometerRotations * WINDSPEED_FACTOR;
 }
diff --git a/firmware/webUpdater.ino b/firmware/webUpdater.ino
index 02ea993..40d4d84 100644
--- a/firmware/webUpdater.ino
+++ b/firmware/webUpdater.ino
@@ -24,9 +24,7 @@ ESP8266HTTPUpdateServer httpUpdater;
 String _webUpdater_ip = "127.0.0.1";
 String _webUpdater_dev = "unknown";
 
-#ifdef SHOW_SENSOR_DATA_ON_WEBUPDATER_MAIN_PAGE
-float  _webUpdater_sensValues[VALUES];
-#endif
+float _webUpdater_sensValues[VALUES];
 
 #define TR_TD_START_STR "<tr><td>"
 #define TR_TD_END_STR   "</td></tr>"