diff --git a/doc-src/certinstall.html b/doc-src/certinstall.html
index fb3cfd42e..594049d99 100644
--- a/doc-src/certinstall.html
+++ b/doc-src/certinstall.html
@@ -31,8 +31,8 @@ you're on, and you are good to go.
 
 ## <a id="docManual"></a>Installing the mitmproxy CA certificate manually
 
-Sometimes using the quick install app is not an option - Java or the IOS
-similator spring to mind - or you just need to do it manually for some other
+Sometimes using the quick install app is not an option - Java or the iOS
+Simulator spring to mind - or you just need to do it manually for some other
 reason. Below is a list of pointers to manual certificate installation
 documentation for some common platforms: