diff --git a/discogs-search/README.md b/discogs-search/README.md
index e458060..03a5d27 100644
--- a/discogs-search/README.md
+++ b/discogs-search/README.md
@@ -9,9 +9,3 @@ It also adds a keyword "disc", so you can type "disc Model 500" and get the disc
 ## What it shows
 
 How to use the [`chrome_settings_overrides`](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/manifest.json/chrome_settings_overrides) manifest key to define a new search engine.
-
-Note that Chrome mandates the `is_default` property, and `encoding` must also be included unless `prepopulated_id` is set. Since none of these properties are yet supported in Firefox, it's not possible to write a single manifest.json that works in both browsers. So this example includes three manifest*.json files:
-
-* manifest-chrome.json: works in Chrome. Rename this to manifest.json to use Chrome.
-* manifest-firefox.json: works in Firefox.
-* manifest.json: the default. The same as manifest-firefox.json
diff --git a/discogs-search/manifest-chrome.json b/discogs-search/manifest-chrome.json
deleted file mode 100644
index 289044f..0000000
--- a/discogs-search/manifest-chrome.json
+++ /dev/null
@@ -1,19 +0,0 @@
-{
-
-  "manifest_version": 2,
-  "name": "Discogs search engine",
-  "description": "Adds a search engine that searches discogs.com",
-  "version": "1.0",
-
-  "chrome_settings_overrides": {
-    "search_provider": {
-      "name": "Discogs",
-      "search_url": "https://www.discogs.com/search/?q={searchTerms}",
-      "keyword": "disc",
-      "favicon_url": "https://www.discogs.com/favicon.ico",
-      "is_default": false,
-      "encoding": "UTF-8"
-    }
-  }
-
-}
diff --git a/discogs-search/manifest-firefox.json b/discogs-search/manifest-firefox.json
deleted file mode 100644
index 5eb8634..0000000
--- a/discogs-search/manifest-firefox.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-
-  "manifest_version": 2,
-  "name": "Discogs search engine",
-  "description": "Adds a search engine that searches discogs.com",
-  "version": "1.0",
-
-  "applications": {
-    "gecko": {
-      "strict_min_version": "55"
-    }
-  },
-
-  "chrome_settings_overrides": {
-    "search_provider": {
-      "name": "Discogs",
-      "search_url": "https://www.discogs.com/search/?q={searchTerms}",
-      "keyword": "disc",
-      "favicon_url": "https://www.discogs.com/favicon.ico"
-    }
-  }
-
-}
diff --git a/discogs-search/manifest.json b/discogs-search/manifest.json
index 5eb8634..ecaf34d 100644
--- a/discogs-search/manifest.json
+++ b/discogs-search/manifest.json
@@ -4,19 +4,19 @@
   "name": "Discogs search engine",
   "description": "Adds a search engine that searches discogs.com",
   "version": "1.0",
-
   "applications": {
     "gecko": {
       "strict_min_version": "55"
     }
   },
-
   "chrome_settings_overrides": {
     "search_provider": {
       "name": "Discogs",
       "search_url": "https://www.discogs.com/search/?q={searchTerms}",
       "keyword": "disc",
-      "favicon_url": "https://www.discogs.com/favicon.ico"
+      "favicon_url": "https://www.discogs.com/favicon.ico",
+      "is_default": false,
+      "encoding": "UTF-8"
     }
   }