diff --git a/loglist/load.go b/loglist/load.go
index 75b59dc..c3e7ef2 100644
--- a/loglist/load.go
+++ b/loglist/load.go
@@ -54,5 +54,8 @@ func unmarshal(jsonBytes []byte) (*List, error) {
 	if err := json.Unmarshal(jsonBytes, list); err != nil {
 		return nil, err
 	}
+	if err := list.Validate(); err != nil {
+		return nil, fmt.Errorf("Invalid log list: %s", err)
+	}
 	return list, nil
 }