diff --git a/src/misc/Makefile.am b/src/misc/Makefile.am
index 8b2367339..94d1855fb 100644
--- a/src/misc/Makefile.am
+++ b/src/misc/Makefile.am
@@ -54,7 +54,6 @@ misc_HEADERS = \
   satsolver.hh \
   timer.hh \
   tmpfile.hh \
-  unique_ptr.hh \
   version.hh
 
 noinst_LTLIBRARIES = libmisc.la
diff --git a/src/misc/unique_ptr.hh b/src/misc/unique_ptr.hh
deleted file mode 100644
index 61fc02741..000000000
--- a/src/misc/unique_ptr.hh
+++ /dev/null
@@ -1,88 +0,0 @@
-// -*- coding: utf-8 -*-
-// Copyright (C) 2012, 2013 Laboratoire de Recherche et
-// Développement de l'Epita (LRDE).
-//
-// This file is part of Spot, a model checking library.
-//
-// Spot is free software; you can redistribute it and/or modify it
-// under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 3 of the License, or
-// (at your option) any later version.
-//
-// Spot is distributed in the hope that it will be useful, but WITHOUT
-// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
-// License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-#ifndef SPOT_MISC_UNIQUE_PTR_HH
-# define SPOT_MISC_UNIQUE_PTR_HH
-
-namespace spot
-{
-  /// \brief Take ownership of a pointer at its construction, and
-  /// destroy it at the end of the scope.
-  template <typename T>
-  class unique_ptr
-  {
-    typedef T* pointer;
-    typedef const T* const_pointer;
-  public:
-    unique_ptr(pointer ptr)
-      : ptr_(ptr)
-    {
-    }
-
-    ~unique_ptr()
-    {
-      delete ptr_;
-    }
-
-    operator pointer()
-    {
-      return ptr_;
-    }
-
-    pointer
-    operator->()
-    {
-      return ptr_;
-    }
-
-    const_pointer
-    operator->() const
-    {
-      return ptr_;
-    }
-
-  private:
-    pointer ptr_;
-
-    // This copy gives the ownership of the pointer to the new copy.
-    // Can only be used by make_unique.
-    unique_ptr(const unique_ptr& up)
-    {
-      unique_ptr& non_const_up = const_cast<unique_ptr&>(up);
-      ptr_ = non_const_up.ptr_;
-      non_const_up.ptr_ = 0;
-    }
-
-    // Allow `make_unique' to have an access to the private copy.
-    template <typename V> friend unique_ptr<V> make_unique(V* ptr);
-
-    unique_ptr& operator=(const unique_ptr&);
-  };
-
-
-  /// \brief Change a pointer into a unique_ptr.
-  template <typename T>
-  inline unique_ptr<T> make_unique(T* ptr)
-  {
-    return unique_ptr<T>(ptr);
-  }
-}
-
-
-#endif // !SPOT_MISC_UNIQUE_PTR_HH
diff --git a/src/tgbaalgos/simulation.cc b/src/tgbaalgos/simulation.cc
index c2c884d3d..dee758b3e 100644
--- a/src/tgbaalgos/simulation.cc
+++ b/src/tgbaalgos/simulation.cc
@@ -26,7 +26,6 @@
 #include "simulation.hh"
 #include "priv/acccompl.hh"
 #include "misc/minato.hh"
-#include "misc/unique_ptr.hh"
 #include "tgba/bddprint.hh"
 #include "tgbaalgos/reachiter.hh"
 #include "tgbaalgos/sccfilter.hh"
@@ -1599,25 +1598,28 @@ namespace spot
       {
         prev = next;
         direct_simulation<false, Sba> simul(res);
-        tgba* maybe_res = simul.run();
+        tgba* after_simulation = simul.run();
 
         if (res != t)
           delete res;
 
         if (simul.result_is_deterministic())
           {
-            res = maybe_res;
+            res = after_simulation;
             break;
           }
 
-        unique_ptr<tgba> after_simulation(maybe_res);
         direct_simulation<true, Sba> cosimul(after_simulation);
-        unique_ptr<tgba> after_cosimulation(cosimul.run());
+	tgba* after_cosimulation = cosimul.run();
         next = cosimul.get_stat();
+
+	delete after_simulation;
+
 	if (Sba)
 	  res = scc_filter_states(after_cosimulation);
 	else
 	  res = scc_filter(after_cosimulation, false);
+	delete after_cosimulation;
       }
     while (prev != next);
     return res;
@@ -1663,15 +1665,18 @@ namespace spot
       {
         prev = next;
 
-        unique_ptr<tgba> after_simulation(dont_care_simulation(res, limit));
+	tgba* after_simulation = dont_care_simulation(res, limit);
 
         if (res != t)
           delete res;
 
         direct_simulation<true, false> cosimul(after_simulation);
-        unique_ptr<tgba> after_cosimulation(cosimul.run());
+	tgba* after_cosimulation = cosimul.run();
+	delete after_simulation;
+
         next = cosimul.get_stat();
         res = scc_filter(after_cosimulation, true);
+	delete after_cosimulation;
       }
     while (prev != next);
 
diff --git a/src/tgbatest/ltl2tgba.cc b/src/tgbatest/ltl2tgba.cc
index 7ab4c93a0..6c52e4f2b 100644
--- a/src/tgbatest/ltl2tgba.cc
+++ b/src/tgbatest/ltl2tgba.cc
@@ -58,7 +58,6 @@
 #include "tgbaalgos/gtec/gtec.hh"
 #include "eltlparse/public.hh"
 #include "misc/timer.hh"
-#include "misc/unique_ptr.hh"
 #include "tgbaalgos/stats.hh"
 #include "tgbaalgos/scc.hh"
 #include "tgbaalgos/emptiness_stats.hh"
@@ -1789,12 +1788,12 @@ main(int argc, char** argv)
 		    // It is possible that we have applied other
 		    // operations to the automaton since its initial
 		    // degeneralization.  Let's degeneralize again!
-                    spot::unique_ptr<spot::tgba>
-		      s(spot::degeneralize(a,
-					   degen_reset,
-					   degen_order,
-					   degen_cache));
+                    spot::tgba* s = spot::degeneralize(a,
+						       degen_reset,
+						       degen_order,
+						       degen_cache);
 		    spot::never_claim_reachable(std::cout, s, f, spin_comments);
+		    delete s;
 		  }
 		break;
 	      }
@@ -1997,9 +1996,10 @@ main(int argc, char** argv)
 				}
 			      else if (graph_run_tgba_opt)
 				{
-                                  spot::unique_ptr<spot::tgba>
-                                    ar(spot::tgba_run_to_tgba(a, run));
+                                  spot::tgba* ar =
+				    spot::tgba_run_to_tgba(a, run);
 				  spot::dotty_reachable(std::cout, ar, false);
+				  delete ar;
 				}
 			      else
 				{