--- IO-AIO/AIO.xs	2009/07/14 00:13:36	1.151
+++ IO-AIO/AIO.xs	2009/07/14 00:32:27	1.152
@@ -535,19 +535,8 @@
 static SV *
 get_cb (SV *cb_sv)
 {
-  HV *st;
-  GV *gvp;
-  CV *cv;
-
-  if (!SvOK (cb_sv))
-    return 0;
-
-  cv = sv_2cv (cb_sv, &st, &gvp, 0);
-
-  if (!cv)
-    croak ("IO::AIO callback must be undef or a CODE reference");
-
-  return (SV *)cv;
+  SvGETMAGIC (cb_sv);
+  return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
 }
 
 #define dREQ							\
@@ -1223,7 +1212,7 @@
 
         if (items > 1)
           {
-            SV *cb_cv = get_cb (callback);
+            SV *cb_cv =get_cb (callback);
 
             SvREFCNT_dec (req->callback);
             req->callback = SvREFCNT_inc (cb_cv);