diff --git a/firmware/main.c b/firmware/main.c
index 1acd80d..5583453 100644
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -69,8 +69,8 @@ int main(void)
 	TIM14->ARR = 0x00FFu;
 	TIM14->CNT = 0u;
 	TIM14->CCR1 = 0u;
-	/*! -# Set prescaler to 16 ==> ca. 11 KHz */
-	TIM14->PSC = 15u;
+	/*! -# Set prescaler to 11 ==> ca. 17 KHz */
+	TIM14->PSC = 11u - 1u;
 	/*! -# PWM Mode 1 + prefetch */
 	TIM14->CCMR1 = TIM_CCMR1_OC1M_2 | TIM_CCMR1_OC1M_1 | TIM_CCMR1_OC1PE;
 	/*! -# Enable Output compare 1 */