diff --git a/testssl.sh b/testssl.sh
index 4a16155..959de0c 100755
--- a/testssl.sh
+++ b/testssl.sh
@@ -12298,11 +12298,7 @@ determine_ip_addresses() {
                     IPADDRs=$(newline_to_spaces "$ip4 $ip6")
                fi
           else
-               if is_ipv4addr "$CMDLINE_IP"; then
-                    IPADDRs=$(newline_to_spaces "$ip4")
-               else
-                    IPADDRs=$(newline_to_spaces "$ip4 $ip6")
-               fi
+               IPADDRs=$(newline_to_spaces "$ip4")
           fi
      fi
      if [[ -z "$IPADDRs" ]]; then