--- a/layout/style/test/stylo-failures.md
+++ b/layout/style/test/stylo-failures.md
@@ -25,19 +25,16 @@ In which
 Any line which doesn't follow the format above would be ignored like comment.
 
 To use this file, you need to add `--failure-pattern-file=stylo-failures.md`
 to mochitest command.
 
 ## Failures
 
 * Media query support:
-  * "layout.css.prefixes.device-pixel-ratio-webkit" support bug 1366956
-    * test_media_queries.html `-device-pixel-ratio` [27]
-    * test_webkit_device_pixel_ratio.html [3]
   * test_media_queries_dynamic_xbl.html: xbl support bug 1382078 [1]
 * Animation support:
   * SMIL Animation
     * test_restyles_in_smil_animation.html [2]
 * Unsupported values
   * SVG-in-OpenType values not supported servo/servo#15211 bug 1338764
     * test_value_storage.html `context-` [7]
     * test_bug798843_pref.html [3]