diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index d9b37e0ce..a617d0629 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -2469,6 +2469,8 @@
 //#define MBEDTLS_PLATFORM_STD_PRINTF        printf /**< Default printf to use, can be undefined */
 /* Note: your snprintf must correclty zero-terminate the buffer! */
 //#define MBEDTLS_PLATFORM_STD_SNPRINTF    snprintf /**< Default snprintf to use, can be undefined */
+//#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS       0 /**< Default exit value to use, can be undefined */
+//#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE       1 /**< Default exit value to use, can be undefined */
 
 /* To Use Function Macros MBEDTLS_PLATFORM_C must be enabled */
 /* MBEDTLS_PLATFORM_XXX_MACRO and MBEDTLS_PLATFORM_XXX_ALT cannot both be defined */
diff --git a/include/mbedtls/debug.h b/include/mbedtls/debug.h
index 7d944f3f6..295799640 100644
--- a/include/mbedtls/debug.h
+++ b/include/mbedtls/debug.h
@@ -97,7 +97,7 @@ extern "C" {
 void mbedtls_debug_set_threshold( int threshold );
 
 /**
-* \brief    Print a message to the debug output. This function is always used
+ * \brief    Print a message to the debug output. This function is always used
  *          through the MBEDTLS_SSL_DEBUG_MSG() macro, which supplies the ssl
  *          context, file and line number parameters.
  *
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index f71f1b649..1371ff1c6 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -64,7 +64,13 @@ extern "C" {
 #define MBEDTLS_PLATFORM_STD_FREE       free /**< Default free to use */
 #endif
 #if !defined(MBEDTLS_PLATFORM_STD_EXIT)
-#define MBEDTLS_PLATFORM_STD_EXIT      exit /**< Default free to use */
+#define MBEDTLS_PLATFORM_STD_EXIT      exit /**< Default exit to use */
+#endif
+#if !defined(MBEDTLS_PLATFORM_STD_EXIT_SUCCESS)
+#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS  EXIT_SUCCESS /**< Default exit value to use */
+#endif
+#if !defined(MBEDTLS_PLATFORM_STD_EXIT_FAILURE)
+#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE  EXIT_FAILURE /**< Default exit value to use */
 #endif
 #else /* MBEDTLS_PLATFORM_NO_STD_FUNCTIONS */
 #if defined(MBEDTLS_PLATFORM_STD_MEM_HDR)
@@ -207,6 +213,20 @@ int mbedtls_platform_set_exit( void (*exit_func)( int status ) );
 #endif /* MBEDTLS_PLATFORM_EXIT_MACRO */
 #endif /* MBEDTLS_PLATFORM_EXIT_ALT */
 
+/*
+ * The default exit values
+ */
+#if defined(MBEDTLS_PLATFORM_STD_EXIT_SUCCESS)
+#define MBEDTLS_EXIT_SUCCESS MBEDTLS_PLATFORM_STD_EXIT_SUCCESS
+#else
+#define MBEDTLS_EXIT_SUCCESS 0
+#endif
+#if defined(MBEDTLS_PLATFORM_STD_EXIT_FAILURE)
+#define MBEDTLS_EXIT_FAILURE MBEDTLS_PLATFORM_STD_EXIT_FAILURE
+#else
+#define MBEDTLS_EXIT_FAILURE 1
+#endif
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/programs/test/selftest.c b/programs/test/selftest.c
index b168b7112..6ca07bba2 100644
--- a/programs/test/selftest.c
+++ b/programs/test/selftest.c
@@ -52,15 +52,18 @@
 #include "mbedtls/ecjpake.h"
 #include "mbedtls/timing.h"
 
-#include <stdio.h>
 #include <string.h>
 
 #if defined(MBEDTLS_PLATFORM_C)
 #include "mbedtls/platform.h"
 #else
 #include <stdio.h>
+#include <stdlib.h>
 #define mbedtls_printf     printf
 #define mbedtls_snprintf   snprintf
+#define mbedtls_exit       exit
+#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
+#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
 #endif
 
 #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
@@ -99,8 +102,7 @@ static int run_test_snprintf( void )
 
 int main( int argc, char *argv[] )
 {
-    int ret = 0, v, suites_tested = 0, suites_failed = 0,
-        exitcode = EXIT_SUCCESS;
+    int v, suites_tested = 0, suites_failed = 0;
 #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
     unsigned char buf[1000000];
 #endif
@@ -115,7 +117,7 @@ int main( int argc, char *argv[] )
     if( pointer != NULL )
     {
         mbedtls_printf( "all-bits-zero is not a NULL pointer\n" );
-        return( 1 );
+        mbedtls_exit( MBEDTLS_EXIT_FAILURE );
     }
 
     /*
@@ -124,7 +126,7 @@ int main( int argc, char *argv[] )
     if( run_test_snprintf() != 0 )
     {
         mbedtls_printf( "the snprintf implementation is broken\n" );
-        return( 0 );
+        mbedtls_exit( MBEDTLS_EXIT_FAILURE );
     }
 
     if( argc == 2 && ( strcmp( argv[1], "--quiet" ) == 0  ||
@@ -145,7 +147,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_MD2_C)
-    if( ( ret = mbedtls_md2_self_test( v ) ) != 0 )
+    if( mbedtls_md2_self_test( v )  != 0 )
     {
         suites_failed++;
     }
@@ -153,7 +155,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_MD4_C)
-    if( ( ret = mbedtls_md4_self_test( v ) ) != 0 )
+    if( mbedtls_md4_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -161,7 +163,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_MD5_C)
-    if( ( ret = mbedtls_md5_self_test( v ) ) != 0 )
+    if( mbedtls_md5_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -169,7 +171,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_RIPEMD160_C)
-    if( ( ret = mbedtls_ripemd160_self_test( v ) ) != 0 )
+    if( mbedtls_ripemd160_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -177,7 +179,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_SHA1_C)
-    if( ( ret = mbedtls_sha1_self_test( v ) ) != 0 )
+    if( mbedtls_sha1_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -185,7 +187,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_SHA256_C)
-    if( ( ret = mbedtls_sha256_self_test( v ) ) != 0 )
+    if( mbedtls_sha256_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -193,7 +195,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_SHA512_C)
-    if( ( ret = mbedtls_sha512_self_test( v ) ) != 0 )
+    if( mbedtls_sha512_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -201,7 +203,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_ARC4_C)
-    if( ( ret = mbedtls_arc4_self_test( v ) ) != 0 )
+    if( mbedtls_arc4_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -209,7 +211,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_DES_C)
-    if( ( ret = mbedtls_des_self_test( v ) ) != 0 )
+    if( mbedtls_des_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -217,7 +219,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_AES_C)
-    if( ( ret = mbedtls_aes_self_test( v ) ) != 0 )
+    if( mbedtls_aes_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -225,7 +227,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_GCM_C) && defined(MBEDTLS_AES_C)
-    if( ( ret = mbedtls_gcm_self_test( v ) ) != 0 )
+    if( mbedtls_gcm_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -233,7 +235,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_CCM_C) && defined(MBEDTLS_AES_C)
-    if( ( ret = mbedtls_ccm_self_test( v ) ) != 0 )
+    if( mbedtls_ccm_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -241,7 +243,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_BASE64_C)
-    if( ( ret = mbedtls_base64_self_test( v ) ) != 0 )
+    if( mbedtls_base64_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -249,7 +251,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_BIGNUM_C)
-    if( ( ret = mbedtls_mpi_self_test( v ) ) != 0 )
+    if( mbedtls_mpi_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -257,7 +259,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_RSA_C)
-    if( ( ret = mbedtls_rsa_self_test( v ) ) != 0 )
+    if( mbedtls_rsa_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -265,7 +267,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_X509_USE_C)
-    if( ( ret = mbedtls_x509_self_test( v ) ) != 0 )
+    if( mbedtls_x509_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -273,7 +275,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_XTEA_C)
-    if( ( ret = mbedtls_xtea_self_test( v ) ) != 0 )
+    if( mbedtls_xtea_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -281,7 +283,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_CAMELLIA_C)
-    if( ( ret = mbedtls_camellia_self_test( v ) ) != 0 )
+    if( mbedtls_camellia_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -289,7 +291,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_CTR_DRBG_C)
-    if( ( ret = mbedtls_ctr_drbg_self_test( v ) ) != 0 )
+    if( mbedtls_ctr_drbg_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -297,7 +299,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_HMAC_DRBG_C)
-    if( ( ret = mbedtls_hmac_drbg_self_test( v ) ) != 0 )
+    if( mbedtls_hmac_drbg_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -305,7 +307,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_ECP_C)
-    if( ( ret = mbedtls_ecp_self_test( v ) ) != 0 )
+    if( mbedtls_ecp_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -313,7 +315,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_ECJPAKE_C)
-    if( ( ret = mbedtls_ecjpake_self_test( v ) ) != 0 )
+    if( mbedtls_ecjpake_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -321,7 +323,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_DHM_C)
-    if( ( ret = mbedtls_dhm_self_test( v ) ) != 0 )
+    if( mbedtls_dhm_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -329,7 +331,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_ENTROPY_C)
-    if( ( ret = mbedtls_entropy_self_test( v ) ) != 0 )
+    if( mbedtls_entropy_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -337,7 +339,7 @@ int main( int argc, char *argv[] )
 #endif
 
 #if defined(MBEDTLS_PKCS5_C)
-    if( ( ret = mbedtls_pkcs5_self_test( v ) ) != 0 )
+    if( mbedtls_pkcs5_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -347,7 +349,7 @@ int main( int argc, char *argv[] )
 /* Slow tests last */
 
 #if defined(MBEDTLS_TIMING_C)
-    if( ( ret = mbedtls_timing_self_test( v ) ) != 0 )
+    if( mbedtls_timing_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -367,7 +369,7 @@ int main( int argc, char *argv[] )
 
 #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
     mbedtls_memory_buffer_alloc_free();
-    if( ( ret = mbedtls_memory_buffer_alloc_self_test( v ) ) != 0 )
+    if( mbedtls_memory_buffer_alloc_self_test( v ) != 0 )
     {
         suites_failed++;
     }
@@ -393,8 +395,8 @@ int main( int argc, char *argv[] )
     }
 
     if( suites_failed > 0)
-        exitcode = EXIT_FAILURE;
+        mbedtls_exit( MBEDTLS_EXIT_FAILURE );
 
-    exit( exitcode );
+    mbedtls_exit( MBEDTLS_EXIT_SUCCESS );
 }
 
diff --git a/tests/scripts/basic-build-test.sh b/tests/scripts/basic-build-test.sh
index 06c2eb9bd..ffca6f94f 100755
--- a/tests/scripts/basic-build-test.sh
+++ b/tests/scripts/basic-build-test.sh
@@ -36,8 +36,8 @@ fi
 
 
 # Step 1 - Make and instrumented build for code coverage
-CFLAGS=' --coverage -g3 -O0 '
-make
+export CFLAGS=' --coverage -g3 -O0 '
+make clean; make
 
 
 # Step 2 - Execute the tests
diff --git a/yotta/data/module.json b/yotta/data/module.json
index 164a083d8..f3037835f 100644
--- a/yotta/data/module.json
+++ b/yotta/data/module.json
@@ -1,6 +1,6 @@
 {
     "name": "mbedtls",
-    "version": "2.2.2",
+    "version": "2.3.0",
     "description": "The mbed TLS crypto/SSL/TLS library",
     "licenses": [
         {