diff --git a/const/const.ts b/const/const.ts
index e0e1a25cf1d..36238e96aff 100644
--- a/const/const.ts
+++ b/const/const.ts
@@ -8,6 +8,7 @@ namespace $ {
 		const getter = <{ () : Value , '()' : Value }> ( () => value )
 		getter['()'] = value
 		;(getter as any)[ Symbol.toStringTag ] = value
+		;(getter as any )[ $mol_dev_format_head ] = ()=> $mol_dev_format_span( {} , '()=> ', $mol_dev_format_auto( value ) )
 		return getter
 	}
 }