diff --git a/Lib/test/test_tokenize.py b/Lib/test/test_tokenize.py
index 138ed740ffa..d6c37775f0e 100644
--- a/Lib/test/test_tokenize.py
+++ b/Lib/test/test_tokenize.py
@@ -123,7 +123,7 @@ def dump_tokens(s):
 def roundtrip(s):
     f = StringIO(s)
     source = untokenize(generate_tokens(f.readline))
-    print(source, end=' ')
+    print(source, end="")
 
 # This is an example from the docs, set up as a doctest.
 def decistmt(s):