diff --git a/firmware/config/boards/hellen/harley81/board.mk b/firmware/config/boards/hellen/harley81/board.mk
index 46206a7606..6fdb7375f5 100644
--- a/firmware/config/boards/hellen/harley81/board.mk
+++ b/firmware/config/boards/hellen/harley81/board.mk
@@ -10,8 +10,6 @@ DDEFS += -DEFI_MAIN_RELAY_CONTROL=TRUE
 DDEFS += -DFIRMWARE_ID=\"hellen81hd\"
 DDEFS += -DEFI_SOFTWARE_KNOCK=TRUE -DSTM32_ADC_USE_ADC3=TRUE
 
-DDEFS += -DSTM32_PWM_USE_TIM3=TRUE
-
 include $(BOARDS_DIR)/hellen/hellen-common144.mk
 
 # Enable serial pins on expansion header
diff --git a/firmware/hw_layer/ports/stm32/mcuconf_common_f4_f7.h b/firmware/hw_layer/ports/stm32/mcuconf_common_f4_f7.h
index 542b8083ff..e1609cb286 100644
--- a/firmware/hw_layer/ports/stm32/mcuconf_common_f4_f7.h
+++ b/firmware/hw_layer/ports/stm32/mcuconf_common_f4_f7.h
@@ -209,11 +209,7 @@
 #define STM32_PWM_USE_ADVANCED              FALSE
 #define STM32_PWM_USE_TIM1                  FALSE
 #define STM32_PWM_USE_TIM2                  FALSE
-
-#ifndef STM32_PWM_USE_TIM3
-#define STM32_PWM_USE_TIM3                  FALSE
-#endif
-
+#define STM32_PWM_USE_TIM3                  TRUE
 #define STM32_PWM_USE_TIM4                  TRUE
 #define STM32_PWM_USE_TIM5                  TRUE
 #define STM32_PWM_USE_TIM8                  TRUE
diff --git a/firmware/hw_layer/ports/stm32/stm32h7/cfg/mcuconf.h b/firmware/hw_layer/ports/stm32/stm32h7/cfg/mcuconf.h
index b81f5ac2dc..7ec54e1d95 100644
--- a/firmware/hw_layer/ports/stm32/stm32h7/cfg/mcuconf.h
+++ b/firmware/hw_layer/ports/stm32/stm32h7/cfg/mcuconf.h
@@ -356,7 +356,7 @@
 #define STM32_PWM_USE_ADVANCED              FALSE
 #define STM32_PWM_USE_TIM1                  FALSE
 #define STM32_PWM_USE_TIM2                  FALSE
-#define STM32_PWM_USE_TIM3                  FALSE
+#define STM32_PWM_USE_TIM3                  TRUE
 #define STM32_PWM_USE_TIM4                  TRUE
 #define STM32_PWM_USE_TIM5                  TRUE
 #define STM32_PWM_USE_TIM8                  TRUE