Fix missing import.
diff --git a/Tools/freeze/makeconfig.py b/Tools/freeze/makeconfig.py
index bed6f6a..018992c 100644
--- a/Tools/freeze/makeconfig.py
+++ b/Tools/freeze/makeconfig.py
@@ -1,5 +1,5 @@
 import re
-
+import sys
 
 # Write the config.c file
 
@@ -37,7 +37,6 @@
 # Test program.
 
 def test():
-    import sys
     if not sys.argv[3:]:
         print('usage: python makeconfig.py config.c.in outputfile', end=' ')
         print('modulename ...')