diff --git a/components/soc/esp32h2/register/soc/pmu_struct.h b/components/soc/esp32h2/register/soc/pmu_struct.h
index a38ff690eca..74753c69813 100644
--- a/components/soc/esp32h2/register/soc/pmu_struct.h
+++ b/components/soc/esp32h2/register/soc/pmu_struct.h
@@ -6,6 +6,7 @@
 #pragma once
 
 #include <stdint.h>
+#include <stddef.h>
 #include "soc/pmu_reg.h"
 #ifdef __cplusplus
 extern "C" {
diff --git a/components/soc/esp32h21/register/soc/pmu_struct.h b/components/soc/esp32h21/register/soc/pmu_struct.h
index cb014064397..5f77c3317bb 100644
--- a/components/soc/esp32h21/register/soc/pmu_struct.h
+++ b/components/soc/esp32h21/register/soc/pmu_struct.h
@@ -6,6 +6,7 @@
 #pragma once
 
 #include <stdint.h>
+#include <stddef.h>
 #include "soc/pmu_reg.h"
 #ifdef __cplusplus
 extern "C"
diff --git a/components/soc/esp32h4/register/soc/pmu_struct.h b/components/soc/esp32h4/register/soc/pmu_struct.h
index be8eafa6e12..f0caccff4a5 100644
--- a/components/soc/esp32h4/register/soc/pmu_struct.h
+++ b/components/soc/esp32h4/register/soc/pmu_struct.h
@@ -6,6 +6,7 @@
 #pragma once
 
 #include <stdint.h>
+#include <stddef.h>
 #ifdef __cplusplus
 extern "C" {
 #endif