diff --git a/Large-app-how-to.md b/Large-app-how-to.md
index 66d5f71..4c93a86 100644
--- a/Large-app-how-to.md
+++ b/Large-app-how-to.md
@@ -14,7 +14,7 @@ I recommend using virtualenv: easy and allows multiple environments on the same
 
 ## Flask-SQLAlchemy
 
-SQLAlchemy provide an easy and advanced way to serialize your object to different type of relational database. In your virutalenv, install SQLAlchemy from pip:
+SQLAlchemy provide an easy and advanced way to serialize your object to different type of relational database. In your virtualenv, install SQLAlchemy from pip:
 
     pip install flask-sqlalchemy