diff --git a/Source/FanControl.cpp b/Source/FanControl.cpp
index a3660c4..4fa7f00 100644
--- a/Source/FanControl.cpp
+++ b/Source/FanControl.cpp
@@ -18,7 +18,7 @@ extern "C" void TIM14_IRQHandler(void)
 {
   LL_TIM_ClearFlag_UPDATE(TIM14);
 
-  fan_speed = LL_TIM_GetCounter(TIM2) / 2UL;
+  fan_speed = LL_TIM_GetCounter(TIM2) *60U / 2UL;
   LL_TIM_SetCounter(TIM2, 0UL);
 }
 extern "C" void FanControl_SetDuty(uint32_t d)