diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index fd99e05..bd1e66d 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -27,5 +27,5 @@ To allow smooth extensions install from AMO (<https://addons.thunderbird.net/>)
 * re-enable mozAddonManager API (4503, `privacy.resistFingerprinting.block_mozAddonManager`) ;
 * disable RFP, at least for `addons.thunderbird.net` (4505, `privacy.resistFingerprinting.exemptedDomains`).
 
-If you are not configured this way, Thunderbird will download extensions as .XCF archives instead of properly processing them.  
-If don't miss AMO integration, you can always download extensions before opening them using `Add-ons and Themes > Manage Your Extensions (cog wheel) > Install Add-on From File...`.
+If you are not configured this way, Thunderbird will download extensions as .XCF archives instead of properly installing them.  
+If you don't miss AMO integration, you can always download extensions before manually opening them using `Add-ons and Themes > Manage Your Extensions (cog wheel) > Install Add-on From File...`.