diff --git a/manifest.json b/manifest.json
index 1f52a24..ece9ece 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
     "manifest_version": 2,
     "name": "Tab Control",
     "version": "1.0",
-    "description": "Limit the number of tabs you can have open",
+    "description": "Limit the number of tabs you can have open.",
     "icons": {
         "48": "icons/icon48.png",
         "96": "icons/icon96.png",