--- t/90shared_clone_failed_rt_91800.t
+++ t/90shared_clone_failed_rt_91800.t
@@ -13,7 +13,14 @@
         {
             require threads;
             require threads::shared;
-            $will_run = 1;
+            if ( $threads::shared::VERSION < 1.21 )
+            {
+                plan skip_all => "threads::shared 1.21 required for shared_clone";
+            }
+            else
+            {
+                $will_run = 1;
+            }
         }
         else
         {