diff --git a/bootstrap/config.go b/bootstrap/config.go
index 6756046..9972b5d 100644
--- a/bootstrap/config.go
+++ b/bootstrap/config.go
@@ -99,9 +99,9 @@ type BootstrapConfig interface {
 type StopBefore int
 
 const (
-	DoEverything                  StopBefore = 0
-	StopBeforePrepareBuildActions StopBefore = 1
-	StopBeforeWriteNinja          StopBefore = 2
+	DoEverything StopBefore = iota
+	StopBeforePrepareBuildActions
+	StopBeforeWriteNinja
 )
 
 type PrimaryBuilderInvocation struct {