diff --git a/components/esp_hw_support/port/esp32s3/rtc_clk.c b/components/esp_hw_support/port/esp32s3/rtc_clk.c
index 2d3f1d3139..0191dba67c 100644
--- a/components/esp_hw_support/port/esp32s3/rtc_clk.c
+++ b/components/esp_hw_support/port/esp32s3/rtc_clk.c
@@ -307,6 +307,7 @@ static void rtc_clk_cpu_freq_to_pll_mhz(int cpu_freq_mhz)
         SOC_LOGE(TAG, "invalid frequency");
     }
     REGI2C_WRITE_MASK(I2C_DIG_REG, I2C_DIG_REG_EXT_DIG_DREG, dbias);
+    REGI2C_WRITE_MASK(I2C_DIG_REG, I2C_DIG_REG_EXT_RTC_DREG, dbias);
     wait_dig_dbias_valid(2);
     REG_SET_FIELD(SYSTEM_CPU_PER_CONF_REG, SYSTEM_CPUPERIOD_SEL, per_conf);
     REG_SET_FIELD(SYSTEM_SYSCLK_CONF_REG, SYSTEM_PRE_DIV_CNT, 0);