Fix typo in readme - stabilized
diff --git a/README.md b/README.md
index 6a9153f..52fe7fb 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@
 * Structured input/output
 
 The hope is that libraries ported to `proc_macro2` will be trivial to port to
-the real `proc_macro` crate once the support on nightly is stabilize.
+the real `proc_macro` crate once the support on nightly is stabilized.
 
 ## Usage