diff --git a/bl1/aarch64/bl1_exceptions.S b/bl1/aarch64/bl1_exceptions.S
index b0902fd5ab8be253d806a2ea0dd401f8002c5582..eb98ffa0df5221671ae3f6934143db7f31ea7761 100644
--- a/bl1/aarch64/bl1_exceptions.S
+++ b/bl1/aarch64/bl1_exceptions.S
@@ -6,8 +6,8 @@
 
 #include <arch.h>
 #include <asm_macros.S>
-#include <bl_common.h>
 #include <bl1.h>
+#include <bl_common.h>
 #include <context.h>
 
 /* -----------------------------------------------------------------------------
diff --git a/bl1/bl1_fwu.c b/bl1/bl1_fwu.c
index 8dfc55f6ca8e2d2eafb30ff17173bf00c8d30bd3..07a7fc8143d5d08cd5f35bbb6d6a0c3aa63b0427 100644
--- a/bl1/bl1_fwu.c
+++ b/bl1/bl1_fwu.c
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <assert.h>
 #include <arch_helpers.h>
+#include <assert.h>
 #include <auth_mod.h>
 #include <bl1.h>
 #include <bl_common.h>
diff --git a/bl1/bl1_main.c b/bl1/bl1_main.c
index fa4f3a4c0c27cc90e9eda8cd3e7e6819a191ec54..821b6a3577630f104ed068ce8ccf0df3c59f5d4a 100644
--- a/bl1/bl1_main.c
+++ b/bl1/bl1_main.c
@@ -17,8 +17,8 @@
 #include <platform_def.h>
 #include <smcc_helpers.h>
 #include <utils.h>
-#include "bl1_private.h"
 #include <uuid.h>
+#include "bl1_private.h"
 
 /* BL1 Service UUID */
 DEFINE_SVC_UUID(bl1_svc_uid,
diff --git a/bl2u/bl2u_main.c b/bl2u/bl2u_main.c
index 820da100e0454069d7281c7b1d6607530c5680cc..09ad4683f09d4f29e41e7fdafafcc2e27c5c4e8e 100644
--- a/bl2u/bl2u_main.c
+++ b/bl2u/bl2u_main.c
@@ -8,8 +8,8 @@
 #include <arch_helpers.h>
 #include <assert.h>
 #include <auth_mod.h>
-#include <bl_common.h>
 #include <bl1.h>
+#include <bl_common.h>
 #include <console.h>
 #include <debug.h>
 #include <platform.h>
diff --git a/bl31/bl31_main.c b/bl31/bl31_main.c
index c53f8a220515474614b4cb91608b243c7b153237..4a88bd7b54edeca36adc7f52c3394ea6b8b09dd6 100644
--- a/bl31/bl31_main.c
+++ b/bl31/bl31_main.c
@@ -7,8 +7,8 @@
 #include <arch.h>
 #include <arch_helpers.h>
 #include <assert.h>
-#include <bl_common.h>
 #include <bl31.h>
+#include <bl_common.h>
 #include <console.h>
 #include <context_mgmt.h>
 #include <debug.h>
diff --git a/drivers/auth/cryptocell/cryptocell_crypto.c b/drivers/auth/cryptocell/cryptocell_crypto.c
index 05462bea12347022d2a3b89e0b221f8f12765df3..80c10933e9aa83e241f53b0e5e89fda827700761 100644
--- a/drivers/auth/cryptocell/cryptocell_crypto.c
+++ b/drivers/auth/cryptocell/cryptocell_crypto.c
@@ -5,8 +5,8 @@
  */
 
 #include <arch_helpers.h>
-#include <crypto_mod.h>
 #include <crypto_driver.h>
+#include <crypto_mod.h>
 #include <debug.h>
 #include <mbedtls_common.h>
 #include <platform_def.h>
@@ -16,8 +16,8 @@
 #include <secureboot_gen_defs.h>
 #include <stddef.h>
 #include <string.h>
-#include <utils.h>
 #include <util.h>
+#include <utils.h>
 
 #include <mbedtls/oid.h>
 
diff --git a/drivers/auth/mbedtls/mbedtls_crypto.c b/drivers/auth/mbedtls/mbedtls_crypto.c
index b157a32ed2dfe7f5e0f8b765d113a4a2f0cd6694..d8810d6dbe847ed92d3284f98478f58a4f55d065 100644
--- a/drivers/auth/mbedtls/mbedtls_crypto.c
+++ b/drivers/auth/mbedtls/mbedtls_crypto.c
@@ -4,7 +4,6 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-
 #include <crypto_mod.h>
 #include <debug.h>
 #include <mbedtls_common.h>
diff --git a/drivers/auth/tbbr/tbbr_cot.c b/drivers/auth/tbbr/tbbr_cot.c
index e88c7c26dc47a614c14b2ecab6f99bd1beb6896a..a9a4b37fe3df8e30c971c3387827afcc636260a6 100644
--- a/drivers/auth/tbbr/tbbr_cot.c
+++ b/drivers/auth/tbbr/tbbr_cot.c
@@ -6,12 +6,14 @@
 
 #include <auth_mod.h>
 #include <platform_def.h>
+#include <stddef.h>
+
 #if USE_TBBR_DEFS
 #include <tbbr_oid.h>
 #else
 #include <platform_oid.h>
 #endif
-#include <stddef.h>
+
 
 /*
  * Maximum key and hash sizes (in DER format)
diff --git a/drivers/partition/partition.c b/drivers/partition/partition.c
index 190ac38d95766caf77e3d9edc5388dfe6125201b..e2b468363b8fe69143ee9f85e6b2e5b14f6043a7 100644
--- a/drivers/partition/partition.c
+++ b/drivers/partition/partition.c
@@ -6,8 +6,8 @@
 
 #include <assert.h>
 #include <debug.h>
-#include <io_storage.h>
 #include <gpt.h>
+#include <io_storage.h>
 #include <mbr.h>
 #include <partition.h>
 #include <platform.h>
diff --git a/include/drivers/arm/cryptocell/cc_pal_types_plat.h b/include/drivers/arm/cryptocell/cc_pal_types_plat.h
index d8ed3e1d31858a078b55888bb25e49c0f6e70879..84100245b2d33d7b32a90d3be27f49e9492b3797 100644
--- a/include/drivers/arm/cryptocell/cc_pal_types_plat.h
+++ b/include/drivers/arm/cryptocell/cc_pal_types_plat.h
@@ -11,8 +11,8 @@
 #define _CC_PAL_TYPES_PLAT_H
 /* Host specific types for standard (ISO-C99) compilant platforms */
 
-#include <stdint.h>
 #include <stddef.h>
+#include <stdint.h>
 
 typedef uint32_t CCStatus;
 
diff --git a/include/drivers/arm/cryptocell/nvm.h b/include/drivers/arm/cryptocell/nvm.h
index f806d3d42bb424b8082636c0356ec929df342aa8..a70289fb89bb8339f151296b3c7a8ca196ab682d 100644
--- a/include/drivers/arm/cryptocell/nvm.h
+++ b/include/drivers/arm/cryptocell/nvm.h
@@ -13,8 +13,8 @@ extern "C"
 #endif
 
 #include "cc_crypto_boot_defs.h"
-#include "cc_sec_defs.h"
 #include "cc_pal_types.h"
+#include "cc_sec_defs.h"
 
 /*------------------------------------
     DEFINES
diff --git a/include/drivers/auth/mbedtls/mbedtls_config.h b/include/drivers/auth/mbedtls/mbedtls_config.h
index 0a058862699a9550a777f4388c7ad9a2ab17cd7c..fdeb52bb6a9d4b67dd92dadd000fc2e9d22ac393 100644
--- a/include/drivers/auth/mbedtls/mbedtls_config.h
+++ b/include/drivers/auth/mbedtls/mbedtls_config.h
@@ -69,12 +69,12 @@
 #define MBEDTLS_MPI_WINDOW_SIZE              2
 #define MBEDTLS_MPI_MAX_SIZE               256
 
+/* System headers required to build mbed TLS with the current configuration */
+#include <stdlib.h>
+
 /* Memory buffer allocator options */
 #define MBEDTLS_MEMORY_ALIGN_MULTIPLE        8
 
 #include "mbedtls/check_config.h"
 
-/* System headers required to build mbed TLS with the current configuration */
-#include <stdlib.h>
-
 #endif /* __MBEDTLS_CONFIG_H__ */
diff --git a/include/lib/pmf/pmf_helpers.h b/include/lib/pmf/pmf_helpers.h
index 286262a4ca1766c0edec102d633dc4c246dc055f..9984d6918187adf569faf428f9ef964dd316dfa0 100644
--- a/include/lib/pmf/pmf_helpers.h
+++ b/include/lib/pmf/pmf_helpers.h
@@ -12,8 +12,8 @@
 #include <bl_common.h>
 #include <platform.h>
 #include <pmf.h>
-#include <stdint.h>
 #include <stddef.h>
+#include <stdint.h>
 
 /*
  * Prototype for PMF service functions.
diff --git a/lib/cpus/aarch64/cortex_a55.S b/lib/cpus/aarch64/cortex_a55.S
index f1031591a6f86e34896dfacf06c700138d008e83..741c77347ffe1802f65dfc6148ca40e360b0f9dd 100644
--- a/lib/cpus/aarch64/cortex_a55.S
+++ b/lib/cpus/aarch64/cortex_a55.S
@@ -4,10 +4,10 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <cortex_a55.h>
 #include <arch.h>
 #include <asm_macros.S>
 #include <bl_common.h>
+#include <cortex_a55.h>
 #include <cpu_macros.S>
 #include <plat_macros.S>
 
diff --git a/lib/psci/psci_on.c b/lib/psci/psci_on.c
index d5c9843a498c2272978e0d19b57be05fff8a4123..16b22c2abbe6d881d543f20a7d4717ab375b436a 100644
--- a/lib/psci/psci_on.c
+++ b/lib/psci/psci_on.c
@@ -8,8 +8,8 @@
 #include <arch_helpers.h>
 #include <assert.h>
 #include <bl_common.h>
-#include <debug.h>
 #include <context_mgmt.h>
+#include <debug.h>
 #include <platform.h>
 #include <stddef.h>
 #include "psci_private.h"
diff --git a/lib/psci/psci_suspend.c b/lib/psci/psci_suspend.c
index 4798892621aa0371aae8076ecf4d76abc4727412..0d1589ee0a0df7c8eb4eff01483229c106075cb1 100644
--- a/lib/psci/psci_suspend.c
+++ b/lib/psci/psci_suspend.c
@@ -4,10 +4,10 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <assert.h>
-#include <bl_common.h>
 #include <arch.h>
 #include <arch_helpers.h>
+#include <assert.h>
+#include <bl_common.h>
 #include <context.h>
 #include <context_mgmt.h>
 #include <cpu_data.h>
diff --git a/lib/psci/psci_system_off.c b/lib/psci/psci_system_off.c
index 4a55248db86e25e955087373c4239d88fe642379..ef5d3d1d6590b0f6d7b04c79587f7b0cd066abbd 100644
--- a/lib/psci/psci_system_off.c
+++ b/lib/psci/psci_system_off.c
@@ -4,12 +4,12 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <stddef.h>
 #include <arch_helpers.h>
 #include <assert.h>
 #include <console.h>
 #include <debug.h>
 #include <platform.h>
+#include <stddef.h>
 #include "psci_private.h"
 
 void __dead2 psci_system_off(void)
diff --git a/services/spd/opteed/opteed_main.c b/services/spd/opteed/opteed_main.c
index 418e4820ede97340a0f25bc19c55da2759070948..e2a20352a76b6c19a8ebf6f04319e3c2bb35171b 100644
--- a/services/spd/opteed/opteed_main.c
+++ b/services/spd/opteed/opteed_main.c
@@ -16,8 +16,8 @@
  ******************************************************************************/
 #include <arch_helpers.h>
 #include <assert.h>
-#include <bl_common.h>
 #include <bl31.h>
+#include <bl_common.h>
 #include <context_mgmt.h>
 #include <debug.h>
 #include <errno.h>
@@ -26,8 +26,9 @@
 #include <stddef.h>
 #include <uuid.h>
 #include "opteed_private.h"
-#include "teesmc_opteed_macros.h"
 #include "teesmc_opteed.h"
+#include "teesmc_opteed_macros.h"
+
 
 /*******************************************************************************
  * Address of the entrypoint vector table in OPTEE. It is
diff --git a/services/spd/tlkd/tlkd_main.c b/services/spd/tlkd/tlkd_main.c
index 948be5df6b43b59d46813e5cfcb839ab5e2f1be2..78e98535fc9bf9d16d40be3a2c0a6746ea597d2e 100644
--- a/services/spd/tlkd/tlkd_main.c
+++ b/services/spd/tlkd/tlkd_main.c
@@ -15,8 +15,8 @@
  ******************************************************************************/
 #include <arch_helpers.h>
 #include <assert.h>
-#include <bl_common.h>
 #include <bl31.h>
+#include <bl_common.h>
 #include <context_mgmt.h>
 #include <debug.h>
 #include <errno.h>
diff --git a/services/spd/trusty/trusty.c b/services/spd/trusty/trusty.c
index a95141bff4028ca2dc795965e00c0ebecde89ba5..e386f71c67dfc5192c5be65b96d3a944b80fdc3c 100644
--- a/services/spd/trusty/trusty.c
+++ b/services/spd/trusty/trusty.c
@@ -6,8 +6,8 @@
 
 #include <arch_helpers.h>
 #include <assert.h> /* for context_mgmt.h */
-#include <bl_common.h>
 #include <bl31.h>
+#include <bl_common.h>
 #include <context_mgmt.h>
 #include <debug.h>
 #include <interrupt_mgmt.h>
@@ -15,8 +15,8 @@
 #include <runtime_svc.h>
 #include <string.h>
 
-#include "smcall.h"
 #include "sm_err.h"
+#include "smcall.h"
 
 /* macro to check if Hypervisor is enabled in the HCR_EL2 register */
 #define HYP_ENABLE_FLAG		0x286001
diff --git a/services/spd/tspd/tspd_main.c b/services/spd/tspd/tspd_main.c
index afa7e2ae2d20133b9e0ffcd249a678749191066f..2ba9f84c050e74b777e511a5fe4eec2f1a5177b0 100644
--- a/services/spd/tspd/tspd_main.c
+++ b/services/spd/tspd/tspd_main.c
@@ -16,8 +16,8 @@
  ******************************************************************************/
 #include <arch_helpers.h>
 #include <assert.h>
-#include <bl_common.h>
 #include <bl31.h>
+#include <bl_common.h>
 #include <context_mgmt.h>
 #include <debug.h>
 #include <errno.h>
diff --git a/tools/cert_create/include/ext.h b/tools/cert_create/include/ext.h
index 2aa17e25324e73e558a6c75538d5228a170ad7dc..d432e639caf2250c6c7bf8bef1cb9cae7134ffcd 100644
--- a/tools/cert_create/include/ext.h
+++ b/tools/cert_create/include/ext.h
@@ -7,8 +7,8 @@
 #ifndef EXT_H_
 #define EXT_H_
 
-#include "key.h"
 #include <openssl/x509v3.h>
+#include "key.h"
 
 /* Extension types supported */
 enum ext_type_e {
diff --git a/tools/cert_create/src/cmd_opt.c b/tools/cert_create/src/cmd_opt.c
index 0d47872ec030a296a1ddbe12e981d062365d245a..64180d1f50af89a01a7fd745c6fd0e742471febe 100644
--- a/tools/cert_create/src/cmd_opt.c
+++ b/tools/cert_create/src/cmd_opt.c
@@ -5,10 +5,10 @@
  */
 
 #include <assert.h>
+#include <cmd_opt.h>
 #include <getopt.h>
 #include <stddef.h>
 #include <stdlib.h>
-#include <cmd_opt.h>
 #include "debug.h"
 
 /* Command line options */
diff --git a/tools/cert_create/src/main.c b/tools/cert_create/src/main.c
index 99236370cd6711bb93c4a7eb60cb7709776556d2..f14601c8bc52e12360806d27d551b51891967173 100644
--- a/tools/cert_create/src/main.c
+++ b/tools/cert_create/src/main.c
@@ -30,8 +30,8 @@
 #include "ext.h"
 #include "key.h"
 #include "sha.h"
-#include "tbbr/tbb_ext.h"
 #include "tbbr/tbb_cert.h"
+#include "tbbr/tbb_ext.h"
 #include "tbbr/tbb_key.h"
 
 /*
diff --git a/tools/cert_create/src/sha.c b/tools/cert_create/src/sha.c
index 5d5e9e2198252a292324bdf154e96db5a214af03..2971593024a8f3ac62f6a100eb19ddc18c125c25 100644
--- a/tools/cert_create/src/sha.c
+++ b/tools/cert_create/src/sha.c
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <stdio.h>
 #include <openssl/sha.h>
+#include <stdio.h>
 
 #include "debug.h"
 
diff --git a/tools/fiptool/fiptool.c b/tools/fiptool/fiptool.c
index 4d80f2f16632bb6ec067b133460d705b0387aff7..65e4a25c479ab2721a118e90c1bef4e854388622 100644
--- a/tools/fiptool/fiptool.c
+++ b/tools/fiptool/fiptool.c
@@ -19,7 +19,6 @@
 #include <unistd.h>
 
 #include <openssl/sha.h>
-
 #include <firmware_image_package.h>
 
 #include "fiptool.h"
diff --git a/tools/fiptool/fiptool.h b/tools/fiptool/fiptool.h
index 4b5cdd91f22ab523385bc576722217869da55a9f..889b0fde58a70a7c43bf57e6c67085c5523799bc 100644
--- a/tools/fiptool/fiptool.h
+++ b/tools/fiptool/fiptool.h
@@ -7,10 +7,11 @@
 #ifndef __FIPTOOL_H__
 #define __FIPTOOL_H__
 
+#include <firmware_image_package.h>
+
 #include <stddef.h>
 #include <stdint.h>
 
-#include <firmware_image_package.h>
 #include <uuid.h>
 
 #define NELEM(x) (sizeof (x) / sizeof *(x))
diff --git a/tools/fiptool/tbbr_config.c b/tools/fiptool/tbbr_config.c
index 7c6c24be4ff179c7b4cbfb5ebbcb23823ae3de8d..6231cd4edda59f41aa96e2d90e871306b48d808d 100644
--- a/tools/fiptool/tbbr_config.c
+++ b/tools/fiptool/tbbr_config.c
@@ -4,9 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <stddef.h>
-
 #include <firmware_image_package.h>
+#include <stddef.h>
 
 #include "tbbr_config.h"