diff --git a/ChangeLog b/ChangeLog
index b6ec4c1e..333bc21a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,6 +4,8 @@
 
 	* Fixed Inet constructor.
 
+	* Fixed docstring for 'QueryCanceledError' exception.
+
 2010-02-10  Federico Di Gregorio  <fog@initd.org>
 
 	* lib/extensions.py: Binary was not imported from _psycopg; now it is
diff --git a/psycopg/psycopgmodule.c b/psycopg/psycopgmodule.c
index 5a97ff8f..c88616c7 100644
--- a/psycopg/psycopgmodule.c
+++ b/psycopg/psycopgmodule.c
@@ -431,7 +431,7 @@ static struct {
         NotSupportedError_doc },
 #ifdef PSYCOPG_EXTENSIONS
     { "psycopg2.extensions.QueryCanceledError", &QueryCanceledError,
-      &OperationalError, OperationalError_doc },
+      &OperationalError, QueryCanceledError_doc },
     { "psycopg2.extensions.TransactionRollbackError",
       &TransactionRollbackError, &OperationalError,
       TransactionRollbackError_doc },