diff --git a/Ooui/Canvas.cs b/Ooui/Canvas.cs
index d8e679f..b3dc144 100644
--- a/Ooui/Canvas.cs
+++ b/Ooui/Canvas.cs
@@ -7,7 +7,7 @@ namespace Ooui
         CanvasRenderingContext2D context2d = new CanvasRenderingContext2D ();
         int gotContext2d = 0;
 
-        int width = 150;
+        int width = 300;
         public int Width {
             get => width;
             set => SetProperty (ref width, value <= 0 ? 150 : value, "width");
@@ -22,6 +22,7 @@ namespace Ooui
         public Canvas ()
             : base ("canvas")
         {
+            context2d.MessageSent += Send;
         }
 
         public CanvasRenderingContext2D GetContext2D ()
diff --git a/Tests/CanvasTests.cs b/Tests/CanvasTests.cs
index 7d43c81..ac8def7 100644
--- a/Tests/CanvasTests.cs
+++ b/Tests/CanvasTests.cs
@@ -32,7 +32,7 @@ namespace Tests
         public void DefaultWidthAndHeight ()
         {
             var c = new Canvas ();
-            Assert.AreEqual (150, c.Width);
+            Assert.AreEqual (300, c.Width);
             Assert.AreEqual (150, c.Height);
         }