diff --git a/Source/Converter/ESCLParser.cs b/Source/Converter/ESCLParser.cs
index 8548f7d5..e8e2ddc6 100644
--- a/Source/Converter/ESCLParser.cs
+++ b/Source/Converter/ESCLParser.cs
@@ -198,10 +198,6 @@ namespace CHeaderToXML
 
                 var parameters_string = Regex.Match(line, @"\(.*\)").Captures[0].Value.TrimStart('(').TrimEnd(')');
 
-                var parameters =
-                    (from item in get_param.Matches(parameters_string).OfType<Match>()
-                    select item.Captures[0].Value.TrimEnd(',')).ToList();
-
                 var fun =
                     new
                     {
diff --git a/Source/Converter/GLXmlParser.cs b/Source/Converter/GLXmlParser.cs
index f40b3d8e..28596c32 100644
--- a/Source/Converter/GLXmlParser.cs
+++ b/Source/Converter/GLXmlParser.cs
@@ -146,8 +146,6 @@ namespace CHeaderToXML
                 .Concat(groups)
                 .OrderBy(f => TrimName(f.Attribute("name").Value)))
             {
-                var category = TrimName(feature.Attribute("name").Value);
-                var extension = feature.Name == "extension" ? category.Substring(0, category.IndexOf("_")) : "Core";
                 var version = feature.Attribute("number") != null ? feature.Attribute("number").Value : null;
                 var apinames = GetApiNames(feature);