diff --git a/api/IDBObjectStore.json b/api/IDBObjectStore.json
index cc59f84fb4baf8..f458e059bb0d2b 100644
--- a/api/IDBObjectStore.json
+++ b/api/IDBObjectStore.json
@@ -749,17 +749,9 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": "44",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "dom.indexedDB.experimental"
-                }
-              ]
-            },
-            "firefox_android": {
-              "version_added": "22"
+              "version_added": "44"
             },
+            "firefox_android": "mirror",
             "ie": {
               "version_added": "10"
             },