diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index e07acd17ea..f62fba397f 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -379,13 +379,13 @@ X509 Get Next DN #1 No Multivalue RDNs
 mbedtls_x509_dn_get_next:"C=NL, O=PolarSSL, CN=PolarSSL Server 1":0:"C O CN":3:"C=NL, O=PolarSSL, CN=PolarSSL Server 1"
 
 X509 Get Next DN #2 Initial Multivalue RDN
-mbedtls_x509_dn_get_next:"C=NL, O=PolarSSL, CN=PolarSSL Server 1":0b001:"C CN":2:"C=NL + O=PolarSSL, CN=PolarSSL Server 1"
+mbedtls_x509_dn_get_next:"C=NL, O=PolarSSL, CN=PolarSSL Server 1":0x01:"C CN":2:"C=NL + O=PolarSSL, CN=PolarSSL Server 1"
 
 X509 Get Next DN #3 Single Multivalue RDN
-mbedtls_x509_dn_get_next:"C=NL, O=PolarSSL, CN=PolarSSL Server 1":0b011:"C":1:"C=NL + O=PolarSSL + CN=PolarSSL Server 1"
+mbedtls_x509_dn_get_next:"C=NL, O=PolarSSL, CN=PolarSSL Server 1":0x03:"C":1:"C=NL + O=PolarSSL + CN=PolarSSL Server 1"
 
 X509 Get Next DN #4 Consecutive Multivalue RDNs
-mbedtls_x509_dn_get_next:"C=NL, O=PolarSSL, title=Example, CN=PolarSSL Server 1":0b0101:"C title":2:"C=NL + O=PolarSSL, title=Example + CN=PolarSSL Server 1"
+mbedtls_x509_dn_get_next:"C=NL, O=PolarSSL, title=Example, CN=PolarSSL Server 1":0x05:"C title":2:"C=NL + O=PolarSSL, title=Example + CN=PolarSSL Server 1"
 
 X509 Time Expired #1
 depends_on:MBEDTLS_PEM_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_HAVE_TIME_DATE:MBEDTLS_SHA1_C
diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index 2495270153..d831eb1551 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -813,7 +813,7 @@ void mbedtls_x509_dn_get_next( char * name_str, int next_merged, char * expected
     parsed_cur = &parsed;
     for( ; next_merged != 0 && parsed_cur != NULL; next_merged = next_merged >> 1 )
     {
-        parsed_cur->next_merged = next_merged & 0b1;
+        parsed_cur->next_merged = next_merged & 0x01;
         parsed_cur = parsed_cur->next;
     }