1 files changed, 1 insertions, 1 deletions
diff --git a/Swiften/Serializer/PayloadSerializers/MIXUserPreferenceSerializer.cpp b/Swiften/Serializer/PayloadSerializers/MIXUserPreferenceSerializer.cpp
index 2d057ad..618e0b3 100644
--- a/Swiften/Serializer/PayloadSerializers/MIXUserPreferenceSerializer.cpp
+++ b/Swiften/Serializer/PayloadSerializers/MIXUserPreferenceSerializer.cpp
@@ -22,11 +22,11 @@ MIXUserPreferenceSerializer::~MIXUserPreferenceSerializer() {
 
 std::string MIXUserPreferenceSerializer::serializePayload(std::shared_ptr<MIXUserPreference> payload) const {
     if (!payload) {
         return "";
     }
-    XMLElement element("user-preference", "urn:xmpp:mix:1");
+    XMLElement element("user-preference", "urn:xmpp:mix:0");
     if(payload->getData()) {
         element.addNode(std::make_shared<XMLRawTextNode>(FormSerializer().serialize(payload->getData())));
     }
     return element.serialize();
 }