diff --git a/Lib/tokenize.py b/Lib/tokenize.py
index 0f68b40..8d2b4aa 100644
--- a/Lib/tokenize.py
+++ b/Lib/tokenize.py
@@ -281,7 +281,7 @@
     contline = None
     indents = [0]
 
-    while 1:                                   # loop over lines in stream
+    while True:                       # loop over lines in stream
         try:
             line = readline()
         except StopIteration: