--- a/doc/book/en/B0011-schema-stdlib.en.txt	Mon Dec 29 11:16:49 2008 -0800
+++ b/doc/book/en/B0011-schema-stdlib.en.txt	Mon Dec 29 13:50:42 2008 -0800
@@ -5,7 +5,7 @@
 
 The library defines a set of entities schemas that are required by the system
 or commonly used in `CubicWeb` applications.
-Of course, you can extend those schemas if necessarry.
+Of course, you can extend those schemas if necessary.
 
 
 System schemas