diff --git a/xmpp-vala/src/module/xep/0047_in_band_bytestreams.vala b/xmpp-vala/src/module/xep/0047_in_band_bytestreams.vala
index 5d59d18c..caf5309d 100644
--- a/xmpp-vala/src/module/xep/0047_in_band_bytestreams.vala
+++ b/xmpp-vala/src/module/xep/0047_in_band_bytestreams.vala
@@ -14,7 +14,9 @@ public class Module : XmppStreamModule, Iq.Handler {
         stream.add_flag(new Flag());
         stream.get_module(Iq.Module.IDENTITY).register_for_namespace(NS_URI, this);
     }
-    public override void detach(XmppStream stream) { }
+    public override void detach(XmppStream stream) {
+        stream.get_module(Iq.Module.IDENTITY).unregister_from_namespace(NS_URI, this);
+    }
 
     public void on_iq_set(XmppStream stream, Iq.Stanza iq) {
         // the iq module ensures that there's only one child node
diff --git a/xmpp-vala/src/module/xep/0166_jingle.vala b/xmpp-vala/src/module/xep/0166_jingle.vala
index 351d8e0c..150fed8c 100644
--- a/xmpp-vala/src/module/xep/0166_jingle.vala
+++ b/xmpp-vala/src/module/xep/0166_jingle.vala
@@ -117,7 +117,9 @@ public class Module : XmppStreamModule, Iq.Handler {
         stream.get_module(Iq.Module.IDENTITY).register_for_namespace(NS_URI, this);
         current_stream = stream;
     }
-    public override void detach(XmppStream stream) { }
+    public override void detach(XmppStream stream) {
+        stream.get_module(Iq.Module.IDENTITY).unregister_from_namespace(NS_URI, this);
+    }
 
     public void register_content_type(ContentType content_type) {
         content_types[content_type.content_type_ns_uri()] = content_type;