diff --git a/pep-0227.txt b/pep-0227.txt
index 3a39bd55b..d3c48808b 100644
--- a/pep-0227.txt
+++ b/pep-0227.txt
@@ -118,9 +118,9 @@ Specification
     contained within a class definition, the name bindings that occur
     in the class block are not visible to enclosed functions.)
 
-    A class definition is an executable statement that may uses and
-    definitions of names.  These references follow the normal rules
-    for name resolution.  The namespace of the class definition
+    A class definition is an executable statement that may contain
+    uses and definitions of names.  These references follow the normal
+    rules for name resolution.  The namespace of the class definition
     becomes the attribute dictionary of the class.
 
     The following operations are name binding operations.  If they
@@ -489,7 +489,7 @@ References
     [1] Luca Cardelli.  Compiling a functional language.  In Proc. of
     the 1984 ACM Conference on Lisp and Functional Programming,
     pp. 208-217, Aug. 1984
-        http://citeseer.nj.nec.com/cardelli84compiling.html
+        http://citeseer.ist.psu.edu/cardelli84compiling.html
 
 Copyright