diff --git a/vexflow/vexflow.d.ts b/vexflow/vexflow.d.ts
index c9269a635a..3d0b5c67ad 100644
--- a/vexflow/vexflow.d.ts
+++ b/vexflow/vexflow.d.ts
@@ -838,8 +838,8 @@ declare module Vex {
         }
         
         export module StaveLine {
-            enum TextVerticalPosition {TOP, BOTTOM}
-            enum TextJustification {LEFT, CENTER, RIGHT}
+            const enum TextVerticalPosition {TOP, BOTTOM}
+            const enum TextJustification {LEFT, CENTER, RIGHT}
         }
         
         class StaveLine {