diff --git a/configs/config-ccm-psk-tls1_2.h b/configs/config-ccm-psk-tls1_2.h
index a829501..51bb962 100644
--- a/configs/config-ccm-psk-tls1_2.h
+++ b/configs/config-ccm-psk-tls1_2.h
@@ -29,8 +29,6 @@
  *
  * See README.txt for usage instructions.
  */
-#ifndef MBEDTLS_CONFIG_H
-#define MBEDTLS_CONFIG_H
 
 /* System support */
 //#define MBEDTLS_HAVE_TIME /* Optionally used in Hello messages */
@@ -85,7 +83,3 @@
  */
 #define MBEDTLS_SSL_IN_CONTENT_LEN             1024
 #define MBEDTLS_SSL_OUT_CONTENT_LEN             1024
-
-#include "mbedtls/check_config.h"
-
-#endif /* MBEDTLS_CONFIG_H */
diff --git a/configs/config-no-entropy.h b/configs/config-no-entropy.h
index 7ca33c3..edba4a0 100644
--- a/configs/config-no-entropy.h
+++ b/configs/config-no-entropy.h
@@ -29,9 +29,6 @@
  * See README.txt for usage instructions.
  */
 
-#ifndef MBEDTLS_CONFIG_H
-#define MBEDTLS_CONFIG_H
-
 /* System support */
 #define MBEDTLS_HAVE_ASM
 #define MBEDTLS_HAVE_TIME
@@ -86,7 +83,3 @@
 
 /* Miscellaneous options */
 #define MBEDTLS_AES_ROM_TABLES
-
-#include "mbedtls/check_config.h"
-
-#endif /* MBEDTLS_CONFIG_H */
diff --git a/configs/config-suite-b.h b/configs/config-suite-b.h
index b62bdfa..c70773d 100644
--- a/configs/config-suite-b.h
+++ b/configs/config-suite-b.h
@@ -33,9 +33,6 @@
  * See README.txt for usage instructions.
  */
 
-#ifndef MBEDTLS_CONFIG_H
-#define MBEDTLS_CONFIG_H
-
 /* System support */
 #define MBEDTLS_HAVE_ASM
 #define MBEDTLS_HAVE_TIME
@@ -113,7 +110,3 @@
  */
 #define MBEDTLS_SSL_IN_CONTENT_LEN             1024
 #define MBEDTLS_SSL_OUT_CONTENT_LEN             1024
-
-#include "mbedtls/check_config.h"
-
-#endif /* MBEDTLS_CONFIG_H */
diff --git a/configs/config-symmetric-only.h b/configs/config-symmetric-only.h
index 5b10063..6aff42f 100644
--- a/configs/config-symmetric-only.h
+++ b/configs/config-symmetric-only.h
@@ -20,9 +20,6 @@
  *  limitations under the License.
  */
 
-#ifndef MBEDTLS_CONFIG_H
-#define MBEDTLS_CONFIG_H
-
 /* System support */
 //#define MBEDTLS_HAVE_ASM
 #define MBEDTLS_HAVE_TIME
@@ -90,9 +87,3 @@
 //#define MBEDTLS_THREADING_C
 #define MBEDTLS_TIMING_C
 #define MBEDTLS_VERSION_C
-
-#include "mbedtls/config_psa.h"
-
-#include "check_config.h"
-
-#endif /* MBEDTLS_CONFIG_H */
diff --git a/configs/config-thread.h b/configs/config-thread.h
index c1937de..be889a1 100644
--- a/configs/config-thread.h
+++ b/configs/config-thread.h
@@ -32,9 +32,6 @@
  * See README.txt for usage instructions.
  */
 
-#ifndef MBEDTLS_CONFIG_H
-#define MBEDTLS_CONFIG_H
-
 /* System support */
 #define MBEDTLS_HAVE_ASM
 
@@ -89,7 +86,3 @@
 
 /* Save ROM and a few bytes of RAM by specifying our own ciphersuite list */
 #define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8
-
-#include "mbedtls/check_config.h"
-
-#endif /* MBEDTLS_CONFIG_H */
diff --git a/include/mbedtls/build_info.h b/include/mbedtls/build_info.h
index 8e6b0b8..ad6d394 100644
--- a/include/mbedtls/build_info.h
+++ b/include/mbedtls/build_info.h
@@ -26,10 +26,29 @@
 #ifndef MBEDTLS_BUILD_INFO_H
 #define MBEDTLS_BUILD_INFO_H
 
+#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_DEPRECATE)
+#define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+
 #if !defined(MBEDTLS_CONFIG_FILE)
 #include "mbedtls/config.h"
 #else
 #include MBEDTLS_CONFIG_FILE
 #endif
 
+/* Target and application specific configurations
+ *
+ * Allow user to override any previous default.
+ *
+ */
+#if defined(MBEDTLS_USER_CONFIG_FILE)
+#include MBEDTLS_USER_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_PSA_CRYPTO_CONFIG)
+#include "mbedtls/config_psa.h"
+#endif
+
+#include "mbedtls/check_config.h"
+
 #endif /* MBEDTLS_BUILD_INFO_H */
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 47605f9..f874ae2 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -24,13 +24,6 @@
  *  limitations under the License.
  */
 
-#ifndef MBEDTLS_CONFIG_H
-#define MBEDTLS_CONFIG_H
-
-#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_DEPRECATE)
-#define _CRT_SECURE_NO_DEPRECATE 1
-#endif
-
 /**
  * \name SECTION: System support
  *
@@ -3263,20 +3256,3 @@
 //#define MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
 
 /* \} name SECTION: Customisation configuration options */
-
-/* Target and application specific configurations
- *
- * Allow user to override any previous default.
- *
- */
-#if defined(MBEDTLS_USER_CONFIG_FILE)
-#include MBEDTLS_USER_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PSA_CRYPTO_CONFIG)
-#include "mbedtls/config_psa.h"
-#endif
-
-#include "mbedtls/check_config.h"
-
-#endif /* MBEDTLS_CONFIG_H */
diff --git a/tests/configs/config-wrapper-malloc-0-null.h b/tests/configs/config-wrapper-malloc-0-null.h
index 69a9578..4c4f3bf 100644
--- a/tests/configs/config-wrapper-malloc-0-null.h
+++ b/tests/configs/config-wrapper-malloc-0-null.h
@@ -18,9 +18,6 @@
  *  limitations under the License.
  */
 
-#ifndef MBEDTLS_CONFIG_H
-/* Don't #define MBEDTLS_CONFIG_H, let config.h do it. */
-
 #include "mbedtls/config.h"
 
 #include <stdlib.h>
@@ -33,5 +30,3 @@
 
 #define MBEDTLS_PLATFORM_MEMORY
 #define MBEDTLS_PLATFORM_STD_CALLOC custom_calloc
-
-#endif /* MBEDTLS_CONFIG_H */