diff --git a/Lib/lib2to3/main.py b/Lib/lib2to3/main.py
index 828b02f..7c26cdb 100644
--- a/Lib/lib2to3/main.py
+++ b/Lib/lib2to3/main.py
@@ -64,7 +64,7 @@
                     print(line)
 
 def warn(msg):
-    print >> sys.stderr, "WARNING: %s" % (msg,)
+    print("WARNING: %s" % (msg,), file=sys.stderr)
 
 
 def main(fixer_pkg, args=None):
@@ -159,8 +159,8 @@
                             options.processes)
             except refactor.MultiprocessingUnsupported:
                 assert options.processes > 1
-                print >> sys.stderr, "Sorry, -j isn't " \
-                    "supported on this platform."
+                print("Sorry, -j isn't supported on this platform.",
+                      file=sys.stderr)
                 return 1
         rt.summarize()