diff --git a/lib/x11/corereqs.js b/lib/x11/corereqs.js
index c3fad68..dc13214 100644
--- a/lib/x11/corereqs.js
+++ b/lib/x11/corereqs.js
@@ -167,7 +167,7 @@ module.exports = {
    // opcode 55
    CreateGC: [
        function(cid, drawable, values) {
-           var format = 'CxSLL';           
+           var format = 'CxSLLL';           
            var packetLength = 4 + (values ? Object.keys(values).length : 0);
            var args = [55, packetLength, cid, drawable];
            var vals = packValueMask('CreateGC', values);
@@ -214,7 +214,6 @@ module.exports = {
               format += 'S';
               args.push(coords[i]);
           }
-          console.error([format, args]);
           return [format, args];
       }
    ]