diff --git a/src/_locales/en/messages.json b/src/_locales/en/messages.json
index e1c87f9..d303455 100644
--- a/src/_locales/en/messages.json
+++ b/src/_locales/en/messages.json
@@ -1,4 +1,8 @@
 {
+  "extensionDescription": {
+      "message": "Multi-Account Containers helps you keep all the parts of your online life contained in different tabs. Custom labels and color-coded tabs help keep different activities — like online shopping, travel planning, or checking work email — separate.",
+      "description": "Description of the extension. DO NOT TRANSLATE \"Multi-Account Containers\"."
+  },
   "openInNewTabTitle": {
     "message": "Open New Tab in…",
     "description": "Menu title"
diff --git a/src/manifest.json b/src/manifest.json
index 80d812d..2fc68fd 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -3,7 +3,7 @@
   "name": "Firefox Multi-Account Containers",
   "version": "7.4.0",
   "incognito": "not_allowed",
-  "description": "Multi-Account Containers helps you keep all the parts of your online life contained in different tabs. Custom labels and color-coded tabs help keep different activities — like online shopping, travel planning, or checking work email — separate.",
+  "description": "__MSG_extensionDescription__",
   "icons": {
     "48": "img/container-site-d-48.png",
     "96": "img/container-site-d-96.png"