diff --git a/bsp/cvitek/drivers/drv_pwm.c b/bsp/cvitek/drivers/drv_pwm.c
index 98db8d8eeb..27f8a8bce9 100644
--- a/bsp/cvitek/drivers/drv_pwm.c
+++ b/bsp/cvitek/drivers/drv_pwm.c
@@ -31,7 +31,7 @@ static void cvi_pwm_set_config(rt_ubase_t reg_base, struct rt_pwm_configuration
 {
     unsigned long long duty_clk, period_clk;
 
-    cvi_pwm_set_polarity_low_ch(reg_base, (cfg->channel & PWM_MAX_CH));
+    cvi_pwm_set_polarity_high_ch(reg_base, (cfg->channel & PWM_MAX_CH));
 
     duty_clk = (cfg->pulse * count_unit) / NSEC_COUNT;
     cvi_pwm_set_high_period_ch(reg_base, (cfg->channel & PWM_MAX_CH), duty_clk);