diff --git a/src/main/drivers/timer.h b/src/main/drivers/timer.h
index cbef24d0820..3e298f932da 100644
--- a/src/main/drivers/timer.h
+++ b/src/main/drivers/timer.h
@@ -168,7 +168,9 @@ void timerConfigBase(TIM_TypeDef *tim, uint16_t period, uint8_t mhz);  // TODO -
 
 uint16_t timerGetPeriod(const timerHardware_t *timHw);
 
+#if defined(USE_HAL_DRIVER)
 TIM_HandleTypeDef * timerFindTimerHandle(TIM_TypeDef *tim);
+#endif
 
 void timerEnable(TIM_TypeDef * tim);
 void timerPWMConfigChannel(TIM_TypeDef * tim, uint8_t channel, bool isNChannel, bool inverted, uint16_t value);
diff --git a/src/main/drivers/timer_impl_stdperiph.c b/src/main/drivers/timer_impl_stdperiph.c
index 95cc654a1d6..4b52ac75a33 100644
--- a/src/main/drivers/timer_impl_stdperiph.c
+++ b/src/main/drivers/timer_impl_stdperiph.c
@@ -49,8 +49,9 @@ void impl_enableTimer(TIM_TypeDef * tim)
     TIM_Cmd(tim, ENABLE);
 }
 
-void impl_timerPWMStart(TIM_TypeDef * tim, bool isNChannel)
+void impl_timerPWMStart(TIM_TypeDef * tim, unsigned channel, bool isNChannel)
 {
+    UNUSED(channel);
     UNUSED(isNChannel);
     TIM_CtrlPWMOutputs(tim, ENABLE);
 }