diff --git a/lslopt/lslparse.py b/lslopt/lslparse.py
index af44cdc..985b047 100644
--- a/lslopt/lslparse.py
+++ b/lslopt/lslparse.py
@@ -2368,6 +2368,7 @@ list lazy_list_set(list L, integer i, list v)
         """
         value = self.Parse_expression()
         self.tree.append({'nt':'EXPR', 't':value['t'], 'ch':[value]})
+        self.expect('EOF')
         return
 
     def BuildTempGlobalsTable(self):