diff --git a/source/2/2.1/2.1.1/firefox.rst b/source/2/2.1/2.1.1/firefox.rst
index 159bdc81..25895530 100644
--- a/source/2/2.1/2.1.1/firefox.rst
+++ b/source/2/2.1/2.1.1/firefox.rst
@@ -32,7 +32,7 @@ To go to a specific url in the address bar you can type it in the the main bar i
 
 To bookmark a page press :kbd:`Control +D` or Press the button with three vertical lines and slanted one and then the submenu of bookmarks and bookmark this page. To access the bookmark again press that looks like three vertical lines and a slanted one and bookmarks and then select the bookmark you want.
 
-To zoom in if you find the text on a web page to small press :kbd:`control + +`. If you want to zoom out on the text or pictures press :kbd:`control + -`. To reset to the original zoom press :kbd:`control + 0`.
+To zoom in if you find the text on a web page to small press :kbd:`control + +`. If you want to zoom out on the text or pictures press :kbd:`control + -`. To reset to the original zoom press :kbd:`control + 0`. To make firefox fullscreen press :kbd:`F11`. 
 
 To print a webpage such as directions you can click the button with horizontal bars and select :menuselection:`Print` from the menu.