diff --git a/tests/compat.sh b/tests/compat.sh
index 8e0988e99..ffad4ec4f 100755
--- a/tests/compat.sh
+++ b/tests/compat.sh
@@ -328,8 +328,10 @@ add_common_ciphersuites()
 }
 
 # Ciphersuites usable only with Mbed TLS and OpenSSL
-# Each ciphersuite should appear two times, once with its OpenSSL name, once
-# with its Mbed TLS name.
+# Each ciphersuite is compiled case by case in the MBedTLS standard, and
+# is appended to the list of MBedTLS ciphersuites $M_CIPHERS. The same list
+# is translated to the OpenSSL naming standard and appended to the list of 
+# OpenSSL ciphersuites $O_CIPHERS
 #
 # NOTE: for some reason RSA-PSK doesn't work with OpenSSL,
 # so RSA-PSK ciphersuites need to go in other sections, see
@@ -409,8 +411,10 @@ add_openssl_ciphersuites()
 }
 
 # Ciphersuites usable only with Mbed TLS and GnuTLS
-# Each ciphersuite should appear two times, once with its GnuTLS name, once
-# with its Mbed TLS name.
+# Each ciphersuite is compiled case by case in the MBedTLS standard, and
+# is appended to the list of MBedTLS ciphersuites $M_CIPHERS. The same list
+# is translated to the GnuTLS naming standard and appended to the list of 
+# GnuTLS ciphersuites $G_CIPHERS
 add_gnutls_ciphersuites()
 {
     CIPHERS=""