diff --git a/Lib/pickletools.py b/Lib/pickletools.py
index 6b0fca7..b1337c4 100644
--- a/Lib/pickletools.py
+++ b/Lib/pickletools.py
@@ -1978,7 +1978,7 @@
 
 _dis_test = r"""
 >>> import pickle
->>> x = [1, 2, (3, 4), {str8('abc'): "def"}]
+>>> x = [1, 2, (3, 4), {str8(b'abc'): "def"}]
 >>> pkl = pickle.dumps(x, 0)
 >>> dis(pkl)
     0: (    MARK