--- a/dom/media/test/basic.vtt
+++ b/dom/media/test/basic.vtt
@@ -1,11 +1,13 @@
 WEBVTT
-Region: id=testOne lines=2 width=30%
-Region: id=testTwo lines=4 width=20%
+REGION
+id=testOne lines=2 width=30%
+REGION
+id=testTwo lines=4 width=20%
 
 1
 00:00.500 --> 00:00.700 region:testOne
 This
 
 2
 00:01.200 --> 00:02.400 region:testTwo
 Is

--- a/dom/media/test/region.vtt
+++ b/dom/media/test/region.vtt
@@ -1,5 +1,6 @@
 WEBVTT
-Region: id=fred width=62% lines=5 regionanchor=4%,78% viewportanchor=10%,90% scroll=up
+REGION
+id=fred width=62% lines=5 regionanchor=4%,78% viewportanchor=10%,90% scroll=up
 
 00:01.000 --> 00:02.000 region:fred
 Test here.