diff --git a/include/sta/devices/stm32/mcu/STM32F407xx.hpp b/include/sta/devices/stm32/mcu/STM32F407xx.hpp
index f390ad0..3a3b61d 100644
--- a/include/sta/devices/stm32/mcu/STM32F407xx.hpp
+++ b/include/sta/devices/stm32/mcu/STM32F407xx.hpp
@@ -64,6 +64,11 @@
 #define STA_STM32_USART_3_PCLK_IDX      1 /**< USART3 to PCLK index */
 #define STA_STM32_USART_6_PCLK_IDX      2 /**< USART6 to PCLK index */
 
+// prescaler from APBx to APBx timer clocks
+#define STA_STM32_TIM_PCLK_1_PRESCALER  2 /**< PCLK1 has prescaler of 2 */
+#define STA_STM32_TIM_PCLK_2_PRESCALER  2 /**< PCLK2 has prescaler of 1 */
+
+
 // HAL handle mappings
 //
 
diff --git a/src/debug/profile.cpp b/src/debug/profile.cpp
index 6e0c8de..4e7eec6 100644
--- a/src/debug/profile.cpp
+++ b/src/debug/profile.cpp
@@ -7,7 +7,7 @@
 
 #include <sta/debug/profile.hpp>
 
-#ifdef STA_DEBUGGING_ENABLED
+#ifdef STA_PROFILING_ENABLED
 
 #include <sta/time.hpp>
 
@@ -26,4 +26,4 @@ namespace sta
 	}
 } // namespace sta
 
-#endif // STA_DEBUGGING_ENABLED
+#endif // STA_PROFILING_ENABLED