diff --git a/examples/get-started/hello_world/main/hello_world_main.c b/examples/get-started/hello_world/main/hello_world_main.c
index e7b27a8dbf..7010f3ef61 100644
--- a/examples/get-started/hello_world/main/hello_world_main.c
+++ b/examples/get-started/hello_world/main/hello_world_main.c
@@ -11,6 +11,7 @@
 #include "freertos/task.h"
 #include "esp_chip_info.h"
 #include "esp_flash.h"
+#include "esp_system.h"
 
 void app_main(void)
 {
diff --git a/tools/test_apps/system/gdb/main/hello_world_main.c b/tools/test_apps/system/gdb/main/hello_world_main.c
index d924e14435..b4986f89c1 100644
--- a/tools/test_apps/system/gdb/main/hello_world_main.c
+++ b/tools/test_apps/system/gdb/main/hello_world_main.c
@@ -10,6 +10,7 @@
 #include "freertos/task.h"
 #include "esp_chip_info.h"
 #include "esp_flash.h"
+#include "esp_system.h"
 
 void app_main(void)
 {