diff --git a/testssl.sh b/testssl.sh
index fe0b2db..0c6c668 100755
--- a/testssl.sh
+++ b/testssl.sh
@@ -17169,6 +17169,10 @@ run_renego() {
           prln_warning "not having provided client certificate and private key file, the client x509-based authentication prevents this from being tested"
           fileout "$jsonID" "WARN" "not having provided client certificate and private key file, the client x509-based authentication prevents this from being tested"
      else
+          # We will extensively use subshell and command pipe
+          # Do not let herited pipeline error control interfere
+          [[ $- == *e* ]] && restore_pipeerror=1 
+          [[ $restore_pipeerror == 1 ]] && set +e
           # We will need $ERRFILE for mitigation detection
           if [[ $ERRFILE =~ dev.null ]]; then
                ERRFILE=$TEMPDIR/errorfile.txt || exit $ERR_FCREATE
@@ -17279,6 +17283,7 @@ run_renego() {
                        ;;
                esac
           fi
+          [[ $restore_pipeerror == 1 ]] && set -e
      fi
 
      #pr_bold " Insecure Client-Initiated Renegotiation  "  # pre-RFC 5746, CVE-2009-3555