--- a/dom/media/test/can_play_type_wave.js
+++ b/dom/media/test/can_play_type_wave.js
@@ -9,18 +9,18 @@ function check_wave(v, enabled) {
   check("audio/x-wav", "maybe");
   check("audio/x-pn-wav", "maybe");
 
   // Supported Wave codecs
   check("audio/wave; codecs=1", "probably");
   check("audio/wave; codecs=6", "probably");
   check("audio/wave; codecs=7", "probably");
   // "no codecs" should be supported, I guess
-  check("audio/wave; codecs=", "probably");
-  check("audio/wave; codecs=\"\"", "probably");
+  check("audio/wave; codecs=", "maybe");
+  check("audio/wave; codecs=\"\"", "maybe");
 
   // Unsupported Wave codecs
   check("audio/wave; codecs=0", "");
   check("audio/wave; codecs=2", "");
   check("audio/wave; codecs=xyz,1", "");
   check("audio/wave; codecs=1,xyz", "");
   check("audio/wave; codecs=\"xyz, 1\"", "");
   // empty codec names