diff --git a/src/drivers/stm32/tone_alarm/ToneAlarmInterface.cpp b/src/drivers/stm32/tone_alarm/ToneAlarmInterface.cpp
index b59b97360b..a0b692df38 100644
--- a/src/drivers/stm32/tone_alarm/ToneAlarmInterface.cpp
+++ b/src/drivers/stm32/tone_alarm/ToneAlarmInterface.cpp
@@ -135,7 +135,7 @@
 # endif
 #elif TONE_ALARM_TIMER == 13
 # define TONE_ALARM_BASE                STM32_TIM13_BASE
-# define TONE_ALARM_CLOCK               STM32_APB1_TIM12_CLKIN
+# define TONE_ALARM_CLOCK               STM32_APB1_TIM13_CLKIN
 # define TONE_ALARM_CLOCK_ENABLE        RCC_APB1ENR_TIM13EN
 # define TONE_ALARM_CLOCK_POWER_REG     STM32_RCC_APB1ENR
 # if defined(CONFIG_STM32_TIM13)
@@ -143,7 +143,7 @@
 # endif
 #elif TONE_ALARM_TIMER == 14
 # define TONE_ALARM_BASE                STM32_TIM14_BASE
-# define TONE_ALARM_CLOCK               STM32_APB1_TIM12_CLKIN
+# define TONE_ALARM_CLOCK               STM32_APB1_TIM14_CLKIN
 # define TONE_ALARM_CLOCK_ENABLE        RCC_APB1ENR_TIM14EN
 # define TONE_ALARM_CLOCK_POWER_REG     STM32_RCC_APB1ENR
 # if defined(CONFIG_STM32_TIM14)