diff --git a/pkg/arvo/gen/roller/refuel.hoon b/pkg/arvo/gen/roller/refuel.hoon
index cc083f453..4b6a001a2 100644
--- a/pkg/arvo/gen/roller/refuel.hoon
+++ b/pkg/arvo/gen/roller/refuel.hoon
@@ -1,5 +1,5 @@
 ::  Bumps the gas price for a sending transaction
 ::
 :-  %say
-|=  [* [nonce=@ gas=@ud address=(unit @ux)  ~] ~]
+|=  [* [nonce=@ gas=@ud address=(unit @ux) ~] ~]
 [%roller-action %refuel nonce address gas]