--- a/Coro/State.xs
+++ b/Coro/State.xs
@@ -1412,7 +1412,11 @@
                           PUSHMARK (SP);
                           PUSHs (&PL_sv_yes);
                           PUSHs (fullname);
+# if PERL_VERSION_ATLEAST(5,24,0)
+                          PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (PL_curpad[0])) : &PL_sv_undef);
+#else
                           PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
+#endif
                           PUTBACK;
                           cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
                           if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);