diff --git a/Lib/pickletools.py b/Lib/pickletools.py
index fabeb65..5227841 100644
--- a/Lib/pickletools.py
+++ b/Lib/pickletools.py
@@ -1899,7 +1899,7 @@
             markstack.append(pos)
 
 
-_dis_test = """
+_dis_test = r"""
 >>> import pickle
 >>> x = [1, 2, (3, 4), {'abc': u"def"}]
 >>> pkl = pickle.dumps(x, 0)