diff --git a/t/12_diff_opensslversions.t b/t/12_diff_opensslversions.t
index 91d3262..ed5b8ce 100755
--- a/t/12_diff_opensslversions.t
+++ b/t/12_diff_opensslversions.t
@@ -78,6 +78,21 @@ $cat_csvfile2 =~ s/.nonce-.* //g;
 $cat_csvfile  =~ s/","google.com\/.*","443/","google.com","443/g;
 $cat_csvfile2 =~ s/","google.com\/.*","443/","google.com","443/g;
 
+# Now address the differences for LibreSSL, see t/61_diff_testsslsh.t
+#
+# MacOS / LibreSSL has different OpenSSL names for TLS 1.3 ciphers. That should be rather solved in
+#       testssl.sh, see #2763. But for now we do this here.
+$cat_csvfile  =~ s/AEAD-AES128-GCM-SHA256/TLS_AES_128_GCM_SHA256/g;
+$cat_csvfile  =~ s/AEAD-AES256-GCM-SHA384/TLS_AES_256_GCM_SHA384/g
+# this is a bit ugly but otherwise the line cipher-tls1_3_x1303 with the CHACHA20 cipher misses a space
+$cat_csvfile  =~ s/x1303   AEAD-CHACHA20-POLY1305-SHA256/x1303   TLS_CHACHA20_POLY1305_SHA256 /g;
+# now the other lines, where we don't need to insert the additional space:
+$cat_csvfile  =~ s/AEAD-CHACHA20-POLY1305-SHA256/TLS_CHACHA20_POLY1305_SHA256/g;
+
+# Same with ECDH bit length
+$cat_csv      =~ s/ECDH 253/ECDH 256/g;
+$baseline_csv =~ s/ECDH 253/ECDH 256/g;
+
 $diff = diff \$cat_csvfile, \$cat_csvfile2;
 
 # Compare the differences -- and print them if there were any