diff --git a/main.c b/main.c
index 37babd9..b9ce764 100644
--- a/main.c
+++ b/main.c
@@ -52,12 +52,13 @@ volatile bool time_flag = false; /**< flag set when time changed */
 volatile bool photoresistor_flag = false; /**< flag set when ambient luminosity is measured */
 /** @} */
 
-#define TICKS_PER_SECOND 256 /**< the number of ticks in one second */
 /** @defgroup main_ticks ticks per time units
  *  @note these are derived from TICKS_PER_SECOND
  *  @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 (depend on the number of LED since it tries to have 255 tick per LED per second) */
+#define TICKS_PER_SECOND 256*WS2812B_LEDS/60
 /** number of ticks in one second */
 const uint32_t ticks_second = TICKS_PER_SECOND;
 /** number of ticks in one minute */