diff --git a/float b/float
index c6f379e3bb87a0ff07d0cb9ca62ddffcabd2d78d..ce358ce1857283a25f6d7bb4dfcc827a0ac6acd1 100755
--- a/float
+++ b/float
@@ -557,7 +557,7 @@ memberships, using the --additional-host-group command-line option.
         '--ram', metavar='MB', type=int, default=3072,
         help='RAM for each VM when using --vagrant (default: 3072)')
     create_env_parser.add_argument(
-        '--become', metavar='USER', default='vagrant',
+        '--become', metavar='USER', default='root',
         help='ansible_user, disable ansible_become if "root"')
     create_env_parser.add_argument(
         '--additional-host-group', metavar='GROUP=HOST1[,HOST2...]',