diff --git a/src/tactic/tactical.cpp b/src/tactic/tactical.cpp
index 87974ea60..168965c17 100644
--- a/src/tactic/tactical.cpp
+++ b/src/tactic/tactical.cpp
@@ -1229,9 +1229,9 @@ class using_params_tactical : public unary_tactical {
     params_ref m_params;
 public:
     using_params_tactical(tactic * t, params_ref const & p):unary_tactical(t), m_params(p) {
-        param_descrs r;
-        collect_param_descrs(r);
-        p.validate(r);
+        //param_descrs r;
+        //collect_param_descrs(r);
+        //p.validate(r);
         t->updt_params(p);
     }