diff --git a/lib/ext/randr.js b/lib/ext/randr.js
index 986fffb..fb69629 100644
--- a/lib/ext/randr.js
+++ b/lib/ext/randr.js
@@ -171,7 +171,7 @@ exports.requireExt = function(display, callback)
 
                     pos += 24;
                     var format = Array(res[2] + 1).join('L');
-                    resources.crcs = buf.unpack(format, pos);
+                    resources.crtcs = buf.unpack(format, pos);
                     pos +=  res[2] << 2;
                     format = Array(res[3] + 1).join('L');
                     resources.outputs = buf.unpack(format, pos);