diff --git a/tests/suites/test_suite_x509write.data b/tests/suites/test_suite_x509write.data
index 2240d82de4..f755565eca 100644
--- a/tests/suites/test_suite_x509write.data
+++ b/tests/suites/test_suite_x509write.data
@@ -224,7 +224,7 @@ X509 String to Names #19 (Accept non-ascii hexpairs)
 mbedtls_x509_string_to_names:"C=NL, O=Of\\CCspark, OU=PolarSSL":"C=NL, O=Of\\CCspark, OU=PolarSSL":0
 
 X509 String to Names #20 (Reject empty AttributeValue)
-mbedtls_x509_string_to_names:"C=NL, O=, OU=PolarSSL":"":MBEDTLS_ERR_X509_INVALID_NAME   
+mbedtls_x509_string_to_names:"C=NL, O=, OU=PolarSSL":"":MBEDTLS_ERR_X509_INVALID_NAME
 
 Check max serial length
 x509_set_serial_check: