diff --git a/he-ddns b/he-ddns
index 43130a4..c5a73a9 100755
--- a/he-ddns
+++ b/he-ddns
@@ -41,10 +41,10 @@ while (($#)); do
 				die $LINENO "$help_text"
 			fi
 			;;
-		-4)
+		-4|--ipv4)
 			ipv4=true
 			;;
-		-6)
+		-6|--ipv6)
 			ipv6=true
 			;;
 		-u|--url)