--- a/build/subconfigure.py
+++ b/build/subconfigure.py
@@ -281,17 +281,17 @@ def run(objdir):
         if os.path.isfile(f):
             contents.append(File(f))
 
     # Only run configure if one of the following is true:
     # - config.status doesn't exist
     # - config.status is older than configure
     # - the configure arguments changed
     # - the environment changed in a way that requires a cache clear.
-    configure = mozpath.join(data['srcdir'], 'configure')
+    configure = mozpath.join(data['srcdir'], 'old-configure')
     config_status_path = mozpath.join(objdir, 'config.status')
     skip_configure = True
     if not os.path.exists(config_status_path):
         skip_configure = False
         config_status = None
     else:
         config_status = File(config_status_path)
         if config_status.mtime < os.path.getmtime(configure) or \