diff --git a/lib/carto/torque-reference.js b/lib/carto/torque-reference.js
index f30e0ce..0b9f204 100644
--- a/lib/carto/torque-reference.js
+++ b/lib/carto/torque-reference.js
@@ -167,6 +167,15 @@ var _mapnik_reference_latest = {
                     ["colorize-alpha", -1],
                     ["color-to-alpha", 1],
                     ["scale-hsla", 8],
+                    ["buckets", -1],
+                    ["category", -1],
+                    ["equal", -1],
+                    ["headtails", -1],
+                    ["jenks", -1],
+                    ["quantiles", -1],
+                    ["cartocolor", -1],
+                    ["colorbrewer", -1],
+                    ["range", -1],
                     ["ramp", -1]
                 ],
                 "doc": "A list of image filters."
diff --git a/test/rendering_js.test.js b/test/rendering_js.test.js
index e91e87a..6d3ae42 100644
--- a/test/rendering_js.test.js
+++ b/test/rendering_js.test.js
@@ -166,4 +166,21 @@ describe('RenderingJS', function() {
       assert.equal(st.args[2].value, 'jenks');
   })
 
+  it.only("should parse turbocarto with inner functions", function(){
+    var css = [
+      '#layer {',
+      '  marker-width: ramp([cartodb_id], cartocolor(Bold), category(10));',
+      '}'
+    ].join('\n');
+    var shader = (new carto.RendererJS({ debug: true })).render(css);
+    var layer = shader.getLayers()[0];
+    var st = layer.shader['marker-width'].style({}, {zoom: 1});
+    assert.equal(st.name, "ramp");
+    assert.equal(st.args.length, 3);
+    assert.equal(st.args[1].name, 'cartocolor');
+    assert.equal(st.args[1].args[0].value, 'Bold');
+    assert.equal(st.args[2].name, 'category');
+    assert.equal(st.args[2].args[0].value, 10);
+  });
+
 });