diff --git a/INSTALL b/INSTALL
index 24b518263c..92c33f6495 100644
--- a/INSTALL
+++ b/INSTALL
@@ -14,7 +14,7 @@ Prerequisites
 Installation
 ------------
 
-Once you've downloaded and unpacked a trytond_stock source release, enter the
+Once you've downloaded and unpacked the trytond_stock source release, enter the
 directory where the archive was unpacked, and run:
 
     python setup.py install