diff --git a/components/efuse/esp32c5/esp_efuse_rtc_calib.c b/components/efuse/esp32c5/esp_efuse_rtc_calib.c
index d736107d0f..7616a7728f 100644
--- a/components/efuse/esp32c5/esp_efuse_rtc_calib.c
+++ b/components/efuse/esp32c5/esp_efuse_rtc_calib.c
@@ -53,7 +53,7 @@ uint32_t esp_efuse_rtc_calib_get_init_code(int version, uint32_t adc_unit, int a
     uint32_t init_code = 0;
     ESP_ERROR_CHECK(esp_efuse_read_field_blob(init_code_efuse, &init_code, init_code_size));
 
-    return init_code + 1400;    // version 1 logic
+    return init_code + 1600;    // version 1 logic
 
 }
 
diff --git a/components/hal/esp32c5/include/hal/adc_ll.h b/components/hal/esp32c5/include/hal/adc_ll.h
index 91f82a0f37..7b69f6d79b 100644
--- a/components/hal/esp32c5/include/hal/adc_ll.h
+++ b/components/hal/esp32c5/include/hal/adc_ll.h
@@ -821,7 +821,7 @@ static inline adc_atten_t adc_ll_get_atten(adc_unit_t adc_n, adc_channel_t chann
 __attribute__((always_inline))
 static inline void adc_ll_calibration_init(adc_unit_t adc_n)
 {
-    REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_DREF_ADDR, 4);
+    REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_DREF_ADDR, 1);
 }
 
 /**