Index: gecode/int/channel/link-multi.hpp
===================================================================
--- gecode/int/channel/link-multi.hpp	(revision 12448)
+++ gecode/int/channel/link-multi.hpp	(working copy)
@@ -70,6 +70,8 @@
             GECODE_ME_CHECK(x[j].zero(home));
           GECODE_ME_CHECK(y.eq(home,o+i));
           return ES_OK;
+        } else if (x[i].zero()) {
+          GECODE_ME_CHECK(y.nq(home,o+i));
         }
       (void) new (home) LinkMulti(home,x,y,o);
     }