diff --git a/src/base/abc/abcAig.c b/src/base/abc/abcAig.c
index ff6022b8e..e3f3ce457 100644
--- a/src/base/abc/abcAig.c
+++ b/src/base/abc/abcAig.c
@@ -860,7 +860,8 @@ int Abc_AigReplace( Abc_Aig_t * pMan, Abc_Obj_t * pOld, Abc_Obj_t * pNew, int fU
         pOld = (Abc_Obj_t *)Vec_PtrPop( pMan->vStackReplaceOld );
         pNew = (Abc_Obj_t *)Vec_PtrPop( pMan->vStackReplaceNew );
         if ( Abc_ObjFanoutNum(pOld) == 0 )
-            return 0;
+            //return 0;
+            continue;
         Abc_AigReplace_int( pMan, pOld, pNew, fUpdateLevel );
     }
     if ( fUpdateLevel )