diff --git a/src/Perl6/Actions.nqp b/src/Perl6/Actions.nqp
index c6314d1d7b9..4888410f873 100644
--- a/src/Perl6/Actions.nqp
+++ b/src/Perl6/Actions.nqp
@@ -3201,8 +3201,7 @@ class Perl6::Actions is HLL::Actions does STDActions {
             if $<scoped><DECL><declarator><variable_declarator><semilist> -> $semilist {
                 my @dimensions := nqp::list_i();
                 for $semilist -> $dimension {
-                    $dimension.ast.nosink(1);
-                    my $elems := nqp::unbox_i($*W.compile_time_evaluate($/, $dimension.ast));
+                    my $elems := nqp::unbox_i($*W.compile_time_evaluate($/, $dimension.ast, :mark-wanted));
                     nqp::push_i(@dimensions, $elems);
                 }
                 nqp::bindattr($attr, $attr.WHAT, '$!dimensions', @dimensions);