diff --git a/examples/wifi/power_save/sdkconfig.defaults b/examples/wifi/power_save/sdkconfig.defaults
index 774d706160..cb1a0a7317 100644
--- a/examples/wifi/power_save/sdkconfig.defaults
+++ b/examples/wifi/power_save/sdkconfig.defaults
@@ -12,3 +12,5 @@ CONFIG_GPIO_ESP32_SUPPORT_SWITCH_SLP_PULL=y
 CONFIG_PM_SLP_DISABLE_GPIO=y
 # Enable wifi sleep iram optimization
 CONFIG_ESP_WIFI_SLP_IRAM_OPT=y
+# Use 1000Hz freertos tick to lower sleep time threshold
+CONFIG_FREERTOS_HZ=1000