diff --git a/main.c b/main.c
index ae87bca..612d8f3 100644
--- a/main.c
+++ b/main.c
@@ -57,7 +57,7 @@ volatile bool photoresistor_flag = false; /**< flag set when ambient luminosity
  *  @note I have to use type variables because defines would be stored in signed integers, leading to an overflow it later calculations
  *  @{
  */
-/** the number of ticks in one second (a powe or 2 > 256*WS2812B_LEDS/60) */
+/** the number of ticks in one second (a divisor of 32768 greater than 256*WS2812B_LEDS/60) */
 #define TICKS_PER_SECOND 256
 /** number of ticks in one second */
 const uint32_t ticks_second = TICKS_PER_SECOND;
@@ -504,7 +504,6 @@ int main(void)
 				adc_start_conversion_regular(ADC1); // start measuring ambient luminosity
 			}
 			if ((rtc_get_counter_val()%ticks_second)==0) { // one second passed
-				printf("tick: %lu\n", rtc_get_counter_val());
 				led_toggle(); // LED activity to show we are not stuck
 			}
 			if ((rtc_get_counter_val()%ticks_minute)==0) { // one minute passed