diff --git a/include/mbedtls/x509_crt.h b/include/mbedtls/x509_crt.h
index 8f1cc0c..5482ea4 100644
--- a/include/mbedtls/x509_crt.h
+++ b/include/mbedtls/x509_crt.h
@@ -175,7 +175,7 @@
                         size_t buflen );
 
 /**
- * \brief          Parse one DER-encoded or multiple concatenated PEM-encoded
+ * \brief          Parse one DER-encoded or one or more concatenated PEM-encoded
  *                 certificates and add them to the chained list.
  *
  *                 For PEM-encoded CRTs, the function parses permissively:
@@ -201,7 +201,7 @@
  * \return         \c 0 if all certificates were parsed successfully.
  * \return         The (positive) number of certificates that couldn't
  *                 be parsed if parsing was partly successful (see above).
- * \return         A negative X509- or PEM-specific error code otherwise.
+ * \return         A negative X509 or PEM error code otherwise.
  *
  */
 int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain, const unsigned char *buf, size_t buflen );