diff --git a/pkg/builder/kaniko/errors.go b/pkg/builder/kaniko/errors.go
index c586e21..270ced8 100644
--- a/pkg/builder/kaniko/errors.go
+++ b/pkg/builder/kaniko/errors.go
@@ -23,6 +23,7 @@ func (e *Error) Wrap(err error) error {
 }
 
 var (
+	ErrBuildFailed                      = &Error{Code: "BuildFailed", Message: "build failed"}
 	ErrBuildContextEmpty                = &Error{Code: "BuildContextEmpty", Message: "build context cannot be empty"}
 	ErrCleaningUp                       = &Error{Code: "CleaningUp", Message: "error cleaning up"}
 	ErrCreatingJob                      = &Error{Code: "CreatingJob", Message: "error creating Job"}
diff --git a/pkg/builder/kaniko/kaniko.go b/pkg/builder/kaniko/kaniko.go
index 890d3b4..a8ed2ff 100644
--- a/pkg/builder/kaniko/kaniko.go
+++ b/pkg/builder/kaniko/kaniko.go
@@ -21,7 +21,7 @@ const (
 	kanikoContainerName = "kaniko-container"
 	kanikoJobNamePrefix = "kaniko-build-job"
 
-	DefaultParallelism  = int32(5)
+	DefaultParallelism  = int32(1)
 	DefaultBackoffLimit = int32(5)
 
 	MinioBucketName = "kaniko"
@@ -65,6 +65,10 @@ func (k *Kaniko) Build(ctx context.Context, b *builder.BuilderOptions) (logs str
 		return "", ErrCleaningUp.Wrap(err)
 	}
 
+	if kJob.Status.Succeeded == 0 {
+		return logs, ErrBuildFailed
+	}
+
 	return logs, nil
 }