diff --git a/configs/stm3240g-eval/include/board.h b/configs/stm3240g-eval/include/board.h
index bc11866f37..3096396af2 100755
--- a/configs/stm3240g-eval/include/board.h
+++ b/configs/stm3240g-eval/include/board.h
@@ -149,10 +149,10 @@
 /* Timers driven from APB2 will be twice PCLK2 */
 
 #define STM32_APB2_TIM1_CLKIN   (2*STM32_PCLK2_FREQUENCY)
-#define STM32_APB2_TIM8_CLKIN   (2*STM32_PCLK1_FREQUENCY)
-#define STM32_APB2_TIM9_CLKIN   (2*STM32_PCLK1_FREQUENCY)
-#define STM32_APB2_TIM10_CLKIN  (2*STM32_PCLK1_FREQUENCY)
-#define STM32_APB2_TIM11_CLKIN  (2*STM32_PCLK1_FREQUENCY)
+#define STM32_APB2_TIM8_CLKIN   (2*STM32_PCLK2_FREQUENCY)
+#define STM32_APB2_TIM9_CLKIN   (2*STM32_PCLK2_FREQUENCY)
+#define STM32_APB2_TIM10_CLKIN  (2*STM32_PCLK2_FREQUENCY)
+#define STM32_APB2_TIM11_CLKIN  (2*STM32_PCLK2_FREQUENCY)
 
 /* Timer Frequencies, if APBx is set to 1, frequency is same to APBx
  * otherwise frequency is 2xAPBx. 
diff --git a/configs/stm32f4discovery/include/board.h b/configs/stm32f4discovery/include/board.h
index 8a9ce5e675..1ac0b07019 100755
--- a/configs/stm32f4discovery/include/board.h
+++ b/configs/stm32f4discovery/include/board.h
@@ -142,10 +142,10 @@
 /* Timers driven from APB2 will be twice PCLK2 */
 
 #define STM32_APB2_TIM1_CLKIN   (2*STM32_PCLK2_FREQUENCY)
-#define STM32_APB2_TIM8_CLKIN   (2*STM32_PCLK1_FREQUENCY)
-#define STM32_APB2_TIM9_CLKIN   (2*STM32_PCLK1_FREQUENCY)
-#define STM32_APB2_TIM10_CLKIN  (2*STM32_PCLK1_FREQUENCY)
-#define STM32_APB2_TIM11_CLKIN  (2*STM32_PCLK1_FREQUENCY)
+#define STM32_APB2_TIM8_CLKIN   (2*STM32_PCLK2_FREQUENCY)
+#define STM32_APB2_TIM9_CLKIN   (2*STM32_PCLK2_FREQUENCY)
+#define STM32_APB2_TIM10_CLKIN  (2*STM32_PCLK2_FREQUENCY)
+#define STM32_APB2_TIM11_CLKIN  (2*STM32_PCLK2_FREQUENCY)
 
 /* Timer Frequencies, if APBx is set to 1, frequency is same to APBx
  * otherwise frequency is 2xAPBx.