diff --git a/source/tutorial/install-mongodb-on-os-x.txt b/source/tutorial/install-mongodb-on-os-x.txt
index 5132bc014ea..f211aa80ef7 100644
--- a/source/tutorial/install-mongodb-on-os-x.txt
+++ b/source/tutorial/install-mongodb-on-os-x.txt
@@ -45,7 +45,7 @@ system installed, Homebrew is typically easier and simpler to use.
 Homebrew
 ~~~~~~~~
 
-Homebrew installs binary packages based on published "formula." Issue
+Homebrew installs binary packages based on published "formula". Issue
 the following command at the system shell to update the ``brew``
 package manager: