diff --git a/components/esp_hw_support/port/esp32s3/rtc_init.c b/components/esp_hw_support/port/esp32s3/rtc_init.c
index 0662c6b757..01b62a12e7 100644
--- a/components/esp_hw_support/port/esp32s3/rtc_init.c
+++ b/components/esp_hw_support/port/esp32s3/rtc_init.c
@@ -27,7 +27,7 @@
 #define RTC_CNTL_MEM_FORCE_PU (RTC_CNTL_SLOWMEM_FORCE_PU | RTC_CNTL_FASTMEM_FORCE_PU)
 #define RTC_CNTL_MEM_FORCE_NOISO (RTC_CNTL_SLOWMEM_FORCE_NOISO | RTC_CNTL_FASTMEM_FORCE_NOISO)
 
-static char *TAG = "rtcinit";
+static const char *TAG = "rtcinit";
 
 void rtc_init(rtc_config_t cfg)
 {