Grammar fix
diff --git a/README b/README
index c1fbbbe..acb7fdd 100644
--- a/README
+++ b/README
@@ -225,7 +225,7 @@
 Unsupported systems
 -------------------
 
-A number of systems is not supported in Python 2.7 anymore. Some
+A number of systems are not supported in Python 2.7 anymore. Some
 support code is still present, but will be removed in later versions.
 If you still need to use current Python versions on these systems,
 please send a message to python-dev@python.org indicating that you