diff --git a/src/thread.cpp b/src/thread.cpp
index bfb3058..e13863d 100644
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -15,10 +15,6 @@
 #include <cstring>
 #include <cmsis_os2.h>
 
-// Include FreeRTOS configuration for the system tick rate.
-typedef uint32_t TickType_t;
-#include <FreeRTOSConfig.h>
-
 namespace sta
 {
 	namespace tacos
@@ -126,7 +122,7 @@ namespace sta
 				previous_tick_ = osKernelGetTickCount();
 			}
 
-			previous_tick_ += configTICK_RATE_HZ/frequency; 
+			previous_tick_ += osKernelGetTickFreq()/frequency; 
 
 #ifdef STA_TACOS_WATCHDOG_ENABLED
 			waiting();