diff --git a/smobs.tcc b/smobs.tcc
index c8b9dfe..b1d61b7 100644
--- a/smobs.tcc
+++ b/smobs.tcc
@@ -132,9 +132,6 @@ void Smob_base<Super>::init ()
   // types in order to be able to compare them.  The other comparisons
   // are for static member functions and thus are ordinary function
   // pointers which work without those contortions.
-  if (static_cast<SCM (Super::*)()>(&Super::mark_smob) !=
-      static_cast<SCM (Super::*)()>(&Smob_base<Super>::mark_smob))
-    scm_set_smob_mark (smob_tag_, Super::mark_trampoline);
   scm_set_smob_print (smob_tag_, Super::print_trampoline);
   if (&Super::equal_p != &Smob_base<Super>::equal_p)
     scm_set_smob_equalp (smob_tag_, Super::equal_p);