diff --git a/src/main/drivers/timer_stm32f7xx.c b/src/main/drivers/timer_stm32f7xx.c
index 180116c0fd..e9992d9b19 100644
--- a/src/main/drivers/timer_stm32f7xx.c
+++ b/src/main/drivers/timer_stm32f7xx.c
@@ -96,6 +96,7 @@ const timerDef_t timerDefinitions[HARDWARE_TIMER_DEFINITION_COUNT] = {
 
 uint8_t timerClockDivisor(TIM_TypeDef *tim)
 {
+    UNUSED(tim);
     return 1;
 }