diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index cea8ab5..f854ef1 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -1735,7 +1735,7 @@
      * RFC 4492 section 5.1.1
      */
     return( named_group >= MBEDTLS_SSL_IANA_TLS_GROUP_SECT163K1 &&
-            named_group <= MBEDTLS_SSL_IANA_TLS_GROUP_SECP521R1 );
+            named_group < MBEDTLS_SSL_IANA_TLS_GROUP_FFDHE2048 );
 }
 
 static inline int mbedtls_ssl_tls13_named_group_is_ecdhe( uint16_t named_group )
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 691c0e7..b060e7b 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -6585,7 +6585,7 @@
             "$P_SRV debug_level=3" \
             "$P_CLI debug_level=3 force_ciphersuite=TLS-RSA-WITH-AES-128-CBC-SHA256" \
             0 \
-            -C "client hello, adding supported_elliptic_curves extension" \
+            -C "client hello, adding supported_groups extension" \
             -C "client hello, adding supported_point_formats extension" \
             -S "found supported elliptic curves extension" \
             -S "found supported point formats extension"
@@ -6609,7 +6609,7 @@
             "$P_SRV debug_level=3" \
             "$P_CLI debug_level=3 force_ciphersuite=TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA256" \
             0 \
-            -c "client hello, adding supported_elliptic_curves extension" \
+            -c "client hello, adding supported_groups extension" \
             -c "client hello, adding supported_point_formats extension" \
             -s "found supported elliptic curves extension" \
             -s "found supported point formats extension"