diff --git a/testssl.sh b/testssl.sh
index 7f21f38..65233b5 100755
--- a/testssl.sh
+++ b/testssl.sh
@@ -7264,9 +7264,9 @@ determine_trust() {
           # in a subshell because that should be valid here only
           (export SSL_CERT_DIR="/dev/null"; export SSL_CERT_FILE="/dev/null"
           if [[ $certificates_provided -ge 2 ]]; then
-               $OPENSSL verify -purpose sslserver -CAfile <(cat $ADDTL_CA_FILES "$bundle_fname") -untrusted $TEMPDIR/intermediatecerts.pem $HOSTCERT >$TEMPDIR/${certificate_file[i]}.1 2>$TEMPDIR/${certificate_file[i]}.2
+               $OPENSSL verify $TRUSTED1ST -purpose sslserver -CAfile <(cat $ADDTL_CA_FILES "$bundle_fname") -untrusted $TEMPDIR/intermediatecerts.pem $HOSTCERT >$TEMPDIR/${certificate_file[i]}.1 2>$TEMPDIR/${certificate_file[i]}.2
           else
-               $OPENSSL verify -purpose sslserver -CAfile <(cat $ADDTL_CA_FILES "$bundle_fname") $HOSTCERT >$TEMPDIR/${certificate_file[i]}.1 2>$TEMPDIR/${certificate_file[i]}.2
+               $OPENSSL verify $TRUSTED1ST -purpose sslserver -CAfile <(cat $ADDTL_CA_FILES "$bundle_fname") $HOSTCERT >$TEMPDIR/${certificate_file[i]}.1 2>$TEMPDIR/${certificate_file[i]}.2
           fi)
           verify_retcode[i]=$(awk '/error [1-9][0-9]? at [0-9]+ depth lookup:/ { if (!found) {print $2; found=1} }' $TEMPDIR/${certificate_file[i]}.1 $TEMPDIR/${certificate_file[i]}.2)
           [[ -z "${verify_retcode[i]}" ]] && verify_retcode[i]=0
@@ -19326,6 +19326,8 @@ find_openssl_binary() {
 
      [[ "$(echo -e "\x78\x9C\xAB\xCA\xC9\x4C\xE2\x02\x00\x06\x20\x01\xBC" | $OPENSSL zlib -d 2>/dev/null)" == zlib ]] && HAS_ZLIB=true
 
+     $OPENSSL verify -trusted_first </dev/null 2>&1 | grep -q '^usage' || TRUSTED1ST="-trusted_first"
+
      if [[ -n "$CONNECT_TIMEOUT" ]] || [[ -n "$OPENSSL_TIMEOUT" ]]; then
           # We don't set a general timeout as we might not have "timeout" installed and we only
           # do what is instructed. Thus we check first what the command line params were,