diff --git a/mithril.js b/mithril.js
index e38b46a6..e279e368 100644
--- a/mithril.js
+++ b/mithril.js
@@ -319,8 +319,8 @@ var renderService = function($window) {
 		var attrs = vnode.attrs
 		var is = attrs && attrs.is
 		var element = ns ?
-			is ? $doc.createElementNS(ns, tag, is) : $doc.createElementNS(ns, tag) :
-			is ? $doc.createElement(tag, is) : $doc.createElement(tag)
+			is ? $doc.createElementNS(ns, tag, {is: is}) : $doc.createElementNS(ns, tag) :
+			is ? $doc.createElement(tag, {is: is}) : $doc.createElement(tag)
 		vnode.dom = element
 		if (attrs != null) {
 			setAttrs(vnode, attrs, ns)
diff --git a/mithril.min.js b/mithril.min.js
index 2c36935b..30736343 100644
--- a/mithril.min.js
+++ b/mithril.min.js
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