diff --git a/examples/system/esp_timer/sdkconfig.defaults b/examples/system/esp_timer/sdkconfig.defaults
index 3c7b19a00f..dfd208c65a 100644
--- a/examples/system/esp_timer/sdkconfig.defaults
+++ b/examples/system/esp_timer/sdkconfig.defaults
@@ -3,7 +3,7 @@ CONFIG_ESP_TIMER_PROFILING=y
 
 # NEWLIB_NANO_FORMAT is enabled by default on ESP32-C2
 # This example needs 64-bit integer formatting, this is why this option is disabled
-CONFIG_NEWLIB_NANO_FORMAT=n
+CONFIG_LIBC_NEWLIB_NANO_FORMAT=n
 
 # Put sleep related source code in IRAM
 CONFIG_PM_SLP_IRAM_OPT=y