diff --git a/extensions/libip6t_eui64.c b/extensions/libip6t_eui64.c
index 607bf86..3bd7a8f 100644
--- a/extensions/libip6t_eui64.c
+++ b/extensions/libip6t_eui64.c
@@ -6,7 +6,7 @@ static struct xtables_match eui64_mt6_reg = {
 	.version	= XTABLES_VERSION,
 	.family		= NFPROTO_IPV6,
 	.size		= XT_ALIGN(sizeof(int)),
-	.userspacesize	= XT_ALIGN(sizeof(int)),
+	.userspacesize	= 0,
 };
 
 void _init(void)
diff --git a/tests/options-most.rules b/tests/options-most.rules
index ef4e7f1..c26847e 100644
--- a/tests/options-most.rules
+++ b/tests/options-most.rules
@@ -91,6 +91,8 @@
 -A matches
 -A matches -p esp -m esp --espspi 5:4294967295
 -A matches
+-A matches -m eui64
+-A matches
 -A matches -m hashlimit --hashlimit-upto 1/sec --hashlimit-burst 1 --hashlimit-name mini1 --hashlimit-htable-expire 2000
 -A matches -m hashlimit --hashlimit-upto 1/sec --hashlimit-burst 1 --hashlimit-name mini1
 -A matches -m hashlimit --hashlimit-upto 1/min --hashlimit-burst 1 --hashlimit-name mini2