diff --git a/gnovm/pkg/gnolang/realm.go b/gnovm/pkg/gnolang/realm.go
index 567aea58284..6514cfc4b51 100644
--- a/gnovm/pkg/gnolang/realm.go
+++ b/gnovm/pkg/gnolang/realm.go
@@ -1349,6 +1349,7 @@ func fillTypesOfValue(store Store, val Value) Value {
 		for cur := cv.List.Head; cur != nil; cur = cur.Next {
 			fillTypesTV(store, &cur.Key)
 			fillTypesTV(store, &cur.Value)
+			cv.vmap[cur.Key.ComputeMapKey(store, false)] = cur
 		}
 		return cv
 	case TypeValue: