param_type.patch

diff --git src/Perl6/Actions.nqp src/Perl6/Actions.nqp
index e3f286503..46c5df34a 100644
--- src/Perl6/Actions.nqp
+++ src/Perl6/Actions.nqp
@@ -9289,7 +9289,9 @@ class Perl6::Actions is HLL::Actions does STDActions {
                         $var.push(QAST::ParamTypeCheck.new(QAST::Op.new(
                             :op('istype_nd'),
                             QAST::Var.new( :name(get_decont_name()), :scope('local') ),
-                            QAST::WVal.new( :value($param_type) )
+                            QAST::WVal.new( :value($is_coercive
+                                                    ?? $param_type.HOW.target_type($param_type)
+                                                    !! $param_type) )
                         )));
                     }
                 }