diff --git a/lib/canvas.js b/lib/canvas.js
index 641aff4..0b9a093 100644
--- a/lib/canvas.js
+++ b/lib/canvas.js
@@ -277,7 +277,7 @@ Canvas.prototype.toBuffer = function(){
  */
 
 Canvas.prototype.toDataURL = function(type){
-  // TODO: jpeg / svg
+  // TODO: jpeg / svg / pdf :)
   type = type || 'image/png';
   if ('image/png' != type) throw new Error('currently only image/png is supported');
   return 'data:' + type
diff --git a/src/canvas.cc b/src/canvas.cc
index 31e3bfd..3bf85dd 100644
--- a/src/canvas.cc
+++ b/src/canvas.cc
@@ -123,7 +123,7 @@ writeToBuffer(void *c, const uint8_t *data, unsigned len) {
 Handle<Value>
 Canvas::StreamPNGSync(const Arguments &args) {
   HandleScope scope;
-  // TODO: async
+  // TODO: async as well
   if (!args[0]->IsFunction())
     return ThrowException(Exception::TypeError(String::New("callback function required")));