diff --git a/core/bounds.gms b/core/bounds.gms
index 643dd70575..df60fffa6c 100755
--- a/core/bounds.gms
+++ b/core/bounds.gms
@@ -501,6 +501,10 @@ loop(prodSeOth2te(enty,te),
   v_prodSeOth.fx(t,regi,"seh2","h2curt") = 0;
 );
 
+loop(demSeOth2te(enty,te),
+  vm_demSeOth.fx(t,regi,enty,te) = 0;
+);
+
 
 ***---------------------------------------------------------------------------
 ***                 make sure the model doesn't use technologies beyond grade 1