diff --git a/Ref/Top/instances.fpp b/Ref/Top/instances.fpp
index 87a5628afa..9f809b33b6 100644
--- a/Ref/Top/instances.fpp
+++ b/Ref/Top/instances.fpp
@@ -8,7 +8,7 @@ module Ref {
 
     constant queueSize = 10
 
-    constant stackSize = 10 * 1024
+    constant stackSize = 16 * 1024
 
   }