diff --git a/lib/atom-writer.js b/lib/atom-writer.js
index 74eb14a..dd8739c 100644
--- a/lib/atom-writer.js
+++ b/lib/atom-writer.js
@@ -38,7 +38,7 @@ ATOMWriter.prototype = {
     assert(updated instanceof Date)
     this.writer.startElement('feed')
     this.writer.writeAttribute('xmlns', 'http://www.w3.org/2005/Atom')
-    this.writer.writeAttributeNS('xmlns','opensearch', null,'http://a9.com/-/spec/opensearch/1.1/')
+    this.writer.writeAttribute('xmlns:opensearch','http://a9.com/-/spec/opensearch/1.1/')
     this.writer.writeElement('id', id)
     if (created instanceof Date) {
       this.writer.writeElement('created', date2string(created))
@@ -55,7 +55,7 @@ ATOMWriter.prototype = {
     this.writer.startElement('title')
     this.writer.writeAttribute('type', type)
     if (typeof lang === 'string') {
-      this.writer.writeAttributeNS('xml','lang', null,lang)
+      this.writer.writeAttribute('xml:lang', lang)
     }
     this.writer.text(value)
     this.writer.endElement()
@@ -159,7 +159,7 @@ ATOMWriter.prototype = {
       this.writer.writeAttribute('type', type)
     }
     if (typeof lang === 'string') {
-      this.writer.writeAttributeNS('xml','lang', null, lang)
+      this.writer.writeAttribute('xml:lang', lang)
     }
     this.writer.text(value)
     this.writer.endElement()
@@ -180,7 +180,7 @@ ATOMWriter.prototype = {
   },
   writeTotalResults: function (value) {
     assert.equal(typeof value, 'number')
-    this.writer.startElementNS('opensearch','totalResults')
+    this.writer.startElement('opensearch:totalResults')
     this.writer.text(value.toString())
     this.writer.endElement()
     return this
@@ -190,7 +190,7 @@ ATOMWriter.prototype = {
       value = 0
     }
     assert.equal(typeof value, 'number')
-    this.writer.startElementNS('opensearch','startIndex')
+    this.writer.startElement('opensearch:startIndex')
     this.writer.text(value.toString())
     this.writer.endElement()
     return this
@@ -200,7 +200,7 @@ ATOMWriter.prototype = {
       value = 20
     }
     assert.equal(typeof value, 'number')
-    this.writer.startElementNS('opensearch','itemsPerPage')
+    this.writer.startElement('opensearch:itemsPerPage')
     this.writer.text(value.toString())
     this.writer.endElement()
     return this
@@ -215,10 +215,10 @@ ATOMWriter.prototype = {
     assert.equal(typeof searchTerms, 'string')
     assert.equal(typeof startPage, 'number')
     assert.equal(typeof role, 'string')
-    this.writer.startElementNS('opensearch','Query')
-    this.writer.writeAttributeNS('opensearch','searchTerms',null,searchTerms)
-    this.writer.writeAttributeNS('opensearch','startPage',null,startPage.toString())
-    this.writer.writeAttributeNS('opensearch','role',null,role)
+    this.writer.startElement('opensearch:Query')
+    this.writer.writeAttribute('opensearch:searchTerms', searchTerms)
+    this.writer.writeAttribute('opensearch:startPage', startPage.toString())
+    this.writer.writeAttribute('opensearch:role', role)
     this.writer.endElement()
     return this
   },