diff --git a/components/esp_rom/include/esp32/rom/secure_boot.h b/components/esp_rom/include/esp32/rom/secure_boot.h
index 1eb69e2537..004d1591c5 100644
--- a/components/esp_rom/include/esp32/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32/rom/secure_boot.h
@@ -14,8 +14,7 @@
 
 #include "sdkconfig.h"
 
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include "ets_sys.h"
@@ -128,5 +127,3 @@ bool ets_use_secure_boot_v2(void);
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/components/esp_rom/include/esp32c3/rom/secure_boot.h b/components/esp_rom/include/esp32c3/rom/secure_boot.h
index 71cf7250d2..d773089b4c 100644
--- a/components/esp_rom/include/esp32c3/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32c3/rom/secure_boot.h
@@ -12,8 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -24,9 +23,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;
@@ -127,5 +123,3 @@ struct ets_secure_boot_key_digests {
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/components/esp_rom/include/esp32h2/rom/secure_boot.h b/components/esp_rom/include/esp32h2/rom/secure_boot.h
index 71cf7250d2..d773089b4c 100644
--- a/components/esp_rom/include/esp32h2/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32h2/rom/secure_boot.h
@@ -12,8 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -24,9 +23,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;
@@ -127,5 +123,3 @@ struct ets_secure_boot_key_digests {
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/components/esp_rom/include/esp32s2/rom/secure_boot.h b/components/esp_rom/include/esp32s2/rom/secure_boot.h
index 8e88081786..173b95aa03 100644
--- a/components/esp_rom/include/esp32s2/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32s2/rom/secure_boot.h
@@ -12,8 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#ifndef _ROM_SECURE_BOOT_H_
-#define _ROM_SECURE_BOOT_H_
+#pragma once
 
 #include <stdint.h>
 #include "ets_sys.h"
@@ -23,9 +22,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;
@@ -126,5 +122,3 @@ struct ets_secure_boot_key_digests {
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* _ROM_SECURE_BOOT_H_ */
diff --git a/components/esp_rom/include/esp32s3/rom/secure_boot.h b/components/esp_rom/include/esp32s3/rom/secure_boot.h
index e720697b3e..0b3b6751cf 100644
--- a/components/esp_rom/include/esp32s3/rom/secure_boot.h
+++ b/components/esp_rom/include/esp32s3/rom/secure_boot.h
@@ -23,9 +23,6 @@
 extern "C" {
 #endif
 
-struct ets_secure_boot_sig_block;
-struct ets_secure_boot_signature_t;
-
 typedef struct ets_secure_boot_sig_block ets_secure_boot_sig_block_t;
 typedef struct ets_secure_boot_signature ets_secure_boot_signature_t;
 typedef struct ets_secure_boot_key_digests ets_secure_boot_key_digests_t;