diff --git a/ChangeLog b/ChangeLog
index f3152dfe..e59fe2ed 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,6 @@
 2005-11-19  Federico Di Gregorio  <fog@initd.org>
 
+	* lib/extensions.py: COMMITED -> COMMITTED. (Closes: #73)
 	* doc/extensions.rst: included Daniele's work after minor cosmetic changes
 	like using the new constants instead of numbers for transaction isolation
 	levels.
diff --git a/lib/extensions.py b/lib/extensions.py
index 239d7fa4..258a4c84 100644
--- a/lib/extensions.py
+++ b/lib/extensions.py
@@ -42,12 +42,12 @@ from _psycopg import ISQLQuote
 
 """Isolation level values."""
 ISOLATION_LEVEL_AUTOCOMMIT    = 0
-ISOLATION_LEVEL_READ_COMMITED = 1 
+ISOLATION_LEVEL_READ_COMMITTED = 1 
 ISOLATION_LEVEL_SERIALIZABLE  = 2
 
-# Postgresql maps the the other standard values to already defined levels
+# PostgreSQL maps the the other standard values to already defined levels
 ISOLATION_LEVEL_REPEATABLE_READ  = ISOLATION_LEVEL_SERIALIZABLE
-ISOLATION_LEVEL_READ_UNCOMMITTED = ISOLATION_LEVEL_READ_COMMITED
+ISOLATION_LEVEL_READ_UNCOMMITTED = ISOLATION_LEVEL_READ_COMMITTED
 
 
 def register_adapter(typ, callable):