diff --git a/Ooui/Canvas.cs b/Ooui/Canvas.cs
index 2c009ac..66ff2cb 100644
--- a/Ooui/Canvas.cs
+++ b/Ooui/Canvas.cs
@@ -14,7 +14,7 @@ namespace Ooui
 
         public int Height {
             get => GetAttribute ("height", 150);
-            set => SetAttributeProperty ("width", value < 0 ? 0 : value);
+            set => SetAttributeProperty ("height", value < 0 ? 0 : value);
         }
 
         public Canvas ()
diff --git a/Tests/CanvasTests.cs b/Tests/CanvasTests.cs
index ac8def7..dc93a19 100644
--- a/Tests/CanvasTests.cs
+++ b/Tests/CanvasTests.cs
@@ -58,8 +58,8 @@ namespace Tests
             Assert.AreEqual (480, c.Height);
             c.Width = 0;
             c.Height = -100;
-            Assert.AreEqual (150, c.Width);
-            Assert.AreEqual (150, c.Height);
+            Assert.AreEqual (0, c.Width);
+            Assert.AreEqual (0, c.Height);
         }
     }
 }