diff --git a/annotation_series_test.go b/annotation_series_test.go
index 309da52..00b6572 100644
--- a/annotation_series_test.go
+++ b/annotation_series_test.go
@@ -53,7 +53,7 @@ func TestAnnotationSeriesMeasure(t *testing.T) {
 
 	box := as.Measure(r, cb, xrange, yrange, sd)
 	assert.False(box.IsZero())
-	assert.Equal(-3.0, box.Top)
+	assert.Equal(-5.0, box.Top)
 	assert.Equal(5.0, box.Left)
 	assert.Equal(147.0, box.Right) //the top,left annotation sticks up 5px and out ~44px.
 	assert.Equal(115.0, box.Bottom)