diff --git a/gpu/internal/rendertest/clip_test.go b/gpu/internal/rendertest/clip_test.go
index 2ff8876d..793b1397 100644
--- a/gpu/internal/rendertest/clip_test.go
+++ b/gpu/internal/rendertest/clip_test.go
@@ -163,7 +163,7 @@ func TestPaintClippedTexture(t *testing.T) {
 }
 
 func TestStrokedPathZeroWidth(t *testing.T) {
-	t.Skip("test broken")
+	t.Skip("test broken, see issue 479")
 
 	run(t, func(o *op.Ops) {
 		{
diff --git a/gpu/internal/rendertest/render_test.go b/gpu/internal/rendertest/render_test.go
index a890269a..f3de925e 100644
--- a/gpu/internal/rendertest/render_test.go
+++ b/gpu/internal/rendertest/render_test.go
@@ -203,7 +203,7 @@ func TestBuildOffscreen(t *testing.T) {
 }
 
 func TestNegativeOverlaps(t *testing.T) {
-	t.Skip("test broken")
+	t.Skip("test broken; see issue 479")
 
 	run(t, func(ops *op.Ops) {
 		defer clip.RRect{Rect: image.Rect(50, 50, 100, 100)}.Push(ops).Pop()