diff --git a/extensions/media-preview/README.md b/extensions/media-preview/README.md
index 30bb44b87a1e8..48428a684bfc6 100644
--- a/extensions/media-preview/README.md
+++ b/extensions/media-preview/README.md
@@ -21,9 +21,9 @@ This extension provides basic preview for images, audio and video files.
 
 - `.mp3`
 - `.wav`
-- `.ogg`
+- `.ogg`, `.oga`
 
 ### Supported video formats
 
-- `.mp4` (does not support `aac` audio track)
+- `.mp4` (does not support `aac` audio tracks)
 - `.webm` (vp8 only)
diff --git a/extensions/media-preview/package.json b/extensions/media-preview/package.json
index 9b215d54c6c86..8c54d78d7696d 100644
--- a/extensions/media-preview/package.json
+++ b/extensions/media-preview/package.json
@@ -44,7 +44,7 @@
         "priority": "builtin",
         "selector": [
           {
-            "filenamePattern": "*.{mp3,wav,ogg}"
+            "filenamePattern": "*.{mp3,wav,ogg,oga}"
           }
         ]
       },