Correct grammar.
diff --git a/Objects/abstract.c b/Objects/abstract.c
index 1d5c4d5..5cabe58 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -1946,7 +1946,7 @@
 		return m->sq_item(s, i);
 	}
 
-	return type_error("'%.200s' object is unindexable", s);
+	return type_error("'%.200s' object does not support indexing", s);
 }
 
 PyObject *