diff --git a/src/Perl6/Metamodel/BOOTSTRAP.pm b/src/Perl6/Metamodel/BOOTSTRAP.pm
index 8de7461..ca333b2 100644
--- a/src/Perl6/Metamodel/BOOTSTRAP.pm
+++ b/src/Perl6/Metamodel/BOOTSTRAP.pm
@@ -503,12 +503,13 @@ Routine.HOW.add_method(Routine, 'set_rw', sub ($self) {
 Routine.HOW.add_method(Routine, 'set_inline_info', sub ($self, $info) {
         my $dcself := pir::perl6_decontainerize__PP($self);
         pir::repr_bind_attr_str__0PPss($dcself, Routine, '$!inline_info',
-            pir::repr_unbox_str__sP($info));
+            nqp::unbox_s($info));
     });

 Routine.HOW.add_method(Routine, 'inline_info', sub ($self) {
         my $dcself := pir::perl6_decontainerize__PP($self);
-        pir::repr_get_attr_str__SPPs($dcself, Routine, '$!inline_info')
+        my $inline_info := nqp::getattr_s($dcself, Routine, '$!inline_info');
+        pir::defined($inline_info) ?? $inline_info !! '';
     });

 # class Sub is Routine { ... }