diff --git a/components/esp_adc/test_apps/adc/sdkconfig.ci.iram_safe b/components/esp_adc/test_apps/adc/sdkconfig.ci.iram_safe
index 45fabc5404..10be16023b 100644
--- a/components/esp_adc/test_apps/adc/sdkconfig.ci.iram_safe
+++ b/components/esp_adc/test_apps/adc/sdkconfig.ci.iram_safe
@@ -2,7 +2,7 @@ CONFIG_COMPILER_DUMP_RTL_FILES=y
 CONFIG_ADC_ONESHOT_CTRL_FUNC_IN_IRAM=y
 CONFIG_GPTIMER_ISR_IRAM_SAFE=y
 CONFIG_ADC_CONTINUOUS_ISR_IRAM_SAFE=y
-CONFIG_COMPILER_OPTIMIZATION_NONE=y
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
 # silent the error check, as the error string are stored in rodata, causing RTL check failure
 CONFIG_COMPILER_OPTIMIZATION_CHECKS_SILENT=y
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT=y