diff --git a/Core/Src/main.c b/Core/Src/main.c
index 1234cd6..0e5da33 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -317,6 +317,7 @@ static void MX_TIM2_Init(void)
   {
     Error_Handler();
   }
+  sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_FALLING;
   sConfigIC.ICSelection = TIM_ICSELECTION_INDIRECTTI;
   if (HAL_TIM_IC_ConfigChannel(&htim2, &sConfigIC, TIM_CHANNEL_2) != HAL_OK)
   {
diff --git a/Core/Src/stm32f4xx_it.c b/Core/Src/stm32f4xx_it.c
index 727aa8b..e0a4389 100644
--- a/Core/Src/stm32f4xx_it.c
+++ b/Core/Src/stm32f4xx_it.c
@@ -274,7 +274,6 @@ void TIM2_IRQHandler(void)
 
 
   /* USER CODE END TIM2_IRQn 0 */
-  //HAL_TIM_IRQHandler(&htim2);
   /* USER CODE BEGIN TIM2_IRQn 1 */
 
   /* USER CODE END TIM2_IRQn 1 */
@@ -288,7 +287,6 @@ void TIM5_IRQHandler(void)
   /* USER CODE BEGIN TIM5_IRQn 0 */
 
   /* USER CODE END TIM5_IRQn 0 */
-  HAL_TIM_IRQHandler(&htim5);
   /* USER CODE BEGIN TIM5_IRQn 1 */
 
   /* USER CODE END TIM5_IRQn 1 */
diff --git a/f411-pulse-recorder.ioc b/f411-pulse-recorder.ioc
index d86dcb3..04d72a2 100644
--- a/f411-pulse-recorder.ioc
+++ b/f411-pulse-recorder.ioc
@@ -85,8 +85,8 @@ NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
 NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:true\:false\:true\:false
 NVIC.TIM1_TRG_COM_TIM11_IRQn=true\:15\:0\:true\:false\:true\:true\:true\:true
-NVIC.TIM2_IRQn=true\:1\:0\:true\:false\:true\:true\:true\:true
-NVIC.TIM5_IRQn=true\:1\:0\:true\:false\:true\:true\:true\:true
+NVIC.TIM2_IRQn=true\:1\:0\:true\:false\:true\:true\:false\:true
+NVIC.TIM5_IRQn=true\:1\:0\:true\:false\:true\:true\:false\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 PA0-WKUP.Signal=S_TIM5_CH1
 PA11.Mode=Device_Only
@@ -139,7 +139,7 @@ ProjectManager.StackSize=0x400
 ProjectManager.TargetToolchain=STM32CubeIDE
 ProjectManager.ToolChainLocation=
 ProjectManager.UnderRoot=true
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_TIM2_Init-TIM2-false-HAL-true,5-MX_TIM5_Init-TIM5-false-HAL-true,6-MX_USB_DEVICE_Init-USB_DEVICE-false-HAL-false,7-MX_TIM11_Init-TIM11-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_TIM2_Init-TIM2-false-HAL-true,5-MX_TIM5_Init-TIM5-false-HAL-true,6-MX_USB_DEVICE_Init-USB_DEVICE-false-HAL-false,7-MX_TIM11_Init-TIM11-false-HAL-true,8-MX_IWDG_Init-IWDG-false-HAL-true
 RCC.48MHZClocksFreq_Value=48000000
 RCC.AHBFreq_Value=96000000
 RCC.APB1CLKDivider=RCC_HCLK_DIV2
@@ -179,7 +179,8 @@ TIM11.Period=10000
 TIM11.Prescaler=95
 TIM2.Channel-Input_Capture1_from_TI1=TIM_CHANNEL_1
 TIM2.Channel-Input_Capture2_from_TI1_63=TIM_CHANNEL_2
-TIM2.IPParameters=Channel-Input_Capture1_from_TI1,Channel-Input_Capture2_from_TI1_63,TIM_MasterOutputTrigger
+TIM2.ICPolarity_CH2=TIM_INPUTCHANNELPOLARITY_FALLING
+TIM2.IPParameters=Channel-Input_Capture1_from_TI1,Channel-Input_Capture2_from_TI1_63,TIM_MasterOutputTrigger,ICPolarity_CH2
 TIM2.TIM_MasterOutputTrigger=TIM_TRGO_OC2REF
 TIM5.Channel-Input_Capture1_from_TI1=TIM_CHANNEL_1
 TIM5.Channel-Input_Capture2_from_TI1_63=TIM_CHANNEL_2