diff --git a/lib/x11/corereqs.js b/lib/x11/corereqs.js
index 57e1a64..080fc1d 100644
--- a/lib/x11/corereqs.js
+++ b/lib/x11/corereqs.js
@@ -43,6 +43,14 @@ var valueMask = {
            dashOffset   : 0x00100000,
            dashes       : 0x00200000,
            arcMode      : 0x00400000
+    },
+    ConfigureWindow: {
+	x: 		0x000001,
+	y:		0x000002,
+	width:		0x000004,
+	height:		0x000008,
+	borderWidth:	0x000010,
+	stackMode:	0x000020
     }
 };
 
@@ -169,6 +177,15 @@ module.exports = {
        [ 'CxSL', [10, 2] ]
    ],
 
+
+   // TODO: remove? this is actually a ConfigureWindow request 
+   // with width and height argiments & arguments mask
+   ResiseWindow: [
+        function(win, width, height) {
+            return ['CxSLSxxSxxSxx', [12, 5, win, 12, width, height]];
+        }
+   ],
+
    // opcode 16
    InternAtom: [
        function (returnOnlyIfExist, value)