diff --git a/Lib/json/encoder.py b/Lib/json/encoder.py
index 2beb10e..d068e72 100644
--- a/Lib/json/encoder.py
+++ b/Lib/json/encoder.py
@@ -397,7 +397,7 @@
             yield 'true'
         elif o is False:
             yield 'false'
-        elif isinstance(o, (int, int)):
+        elif isinstance(o, int):
             yield str(o)
         elif isinstance(o, float):
             yield _floatstr(o)