diff --git a/Firmware/CHANGELOG.md b/Firmware/CHANGELOG.md
index eae9f6dc..1280cb86 100644
--- a/Firmware/CHANGELOG.md
+++ b/Firmware/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## [0.2.1] - 2017-11-14
 ### Fixed
 * USB communication deadlock
+* EXTI handler redefiniton in V3.2
 
 ## [0.2.0] - 2017-11-12
 ### Added
diff --git a/Firmware/Src/prev_board_ver/stm32f4xx_it_V3_2.c b/Firmware/Src/prev_board_ver/stm32f4xx_it_V3_2.c
index 6ea106f5..4e8bd2b2 100644
--- a/Firmware/Src/prev_board_ver/stm32f4xx_it_V3_2.c
+++ b/Firmware/Src/prev_board_ver/stm32f4xx_it_V3_2.c
@@ -120,34 +120,6 @@ void SysTick_Handler(void)
 /* please refer to the startup file (startup_stm32f4xx.s).                    */
 /******************************************************************************/
 
-/**
-* @brief This function handles EXTI line2 interrupt.
-*/
-void EXTI2_IRQHandler(void)
-{
-  /* USER CODE BEGIN EXTI2_IRQn 0 */
-
-  /* USER CODE END EXTI2_IRQn 0 */
-  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_2);
-  /* USER CODE BEGIN EXTI2_IRQn 1 */
-
-  /* USER CODE END EXTI2_IRQn 1 */
-}
-
-/**
-* @brief This function handles EXTI line4 interrupt.
-*/
-void EXTI4_IRQHandler(void)
-{
-  /* USER CODE BEGIN EXTI4_IRQn 0 */
-
-  /* USER CODE END EXTI4_IRQn 0 */
-  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_4);
-  /* USER CODE BEGIN EXTI4_IRQn 1 */
-
-  /* USER CODE END EXTI4_IRQn 1 */
-}
-
 /**
 * @brief This function handles ADC1, ADC2 and ADC3 global interrupts.
 */
diff --git a/Firmware/Src/stm32f4xx_it.c b/Firmware/Src/stm32f4xx_it.c
index a740268a..8bb4559e 100644
--- a/Firmware/Src/stm32f4xx_it.c
+++ b/Firmware/Src/stm32f4xx_it.c
@@ -318,5 +318,13 @@ void EXTI2_IRQHandler(void)
   HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_2);
 }
 
+/**
+* @brief This function handles EXTI line4 interrupt.
+*/
+void EXTI4_IRQHandler(void)
+{
+  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_4);
+}
+
 /* USER CODE END 1 */
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/