diff --git a/lib/xcore.js b/lib/xcore.js
index 1b25aa5..ee0a0cc 100644
--- a/lib/xcore.js
+++ b/lib/xcore.js
@@ -300,6 +300,12 @@ XClient.prototype.unpackEvent = function(type, seq, extra, code, raw)
         event.name = 'DestroyNotify'
         event.wid = extra;
         event.wid1 = values[0];
+    } else if (type == 18) { // UnmapNotify
+        var values = raw.unpack('LLC');
+        event.name = 'UnmapNotify'
+        event.event = extra;
+        event.wid = values[0];
+        event.fromConfigure = values[1] ? true : false;
     } else if (type == 19) { // MapNotify
         var values = raw.unpack('LLC');
         event.name = 'MapNotify'