diff --git a/README.rst b/README.rst
index bc91fc6..4f87493 100644
--- a/README.rst
+++ b/README.rst
@@ -139,6 +139,7 @@ Let's see some sample config for a game, which is saved as
    [config]
    wrapper = cd32
    wrapper_archive = ChaosEngine.7z
+   wrapper_archiver = 7z
    wrapper_gui_msg = 1
 
    amiga_model = CD32
@@ -197,6 +198,7 @@ Example configuration:
    [config]
    wrapper = archive
    wrapper_archive = Workbench_3.1.tar.bz2
+   wrapper_archiver = lha
    wrapper_gui_msg = 1
    wrapper_persist_data = 1
 
diff --git a/fs_uae_wrapper/archive.py b/fs_uae_wrapper/archive.py
index 97e9e0c..3a39496 100644
--- a/fs_uae_wrapper/archive.py
+++ b/fs_uae_wrapper/archive.py
@@ -97,7 +97,7 @@ class Archive(base.Base):
         if not utils.create_archive(arch, title):
             return False
 
-        os.rename(arch, self.arch_filepath)
+        shutil.move(arch, self.arch_filepath)
         os.chdir(curdir)
         return True
 
diff --git a/tests/test_archive.py b/tests/test_archive.py
index 5fca15c..2afdb8c 100644
--- a/tests/test_archive.py
+++ b/tests/test_archive.py
@@ -26,7 +26,9 @@ class TestArchive(TestCase):
         except OSError:
             pass
 
-    def test_validate_options(self):
+    @mock.patch('fs_uae_wrapper.path.which')
+    def test_validate_options(self, which):
+        which.return_value = None
 
         arch = archive.Archive('Config.fs-uae', utils.CmdOption(), {})
         self.assertFalse(arch._validate_options())
@@ -37,17 +39,22 @@ class TestArchive(TestCase):
         arch.all_options['wrapper_archive'] = 'fake.tgz'
         self.assertFalse(arch._validate_options())
 
+        arch.all_options['wrapper_archiver'] = 'rar'
+        self.assertFalse(arch._validate_options())
+
+        which.return_value = 'unrar'
         arch.all_options['wrapper_archiver'] = 'rar'
         self.assertTrue(arch._validate_options())
 
     @mock.patch('tempfile.mkdtemp')
+    @mock.patch('fs_uae_wrapper.path.which')
     @mock.patch('fs_uae_wrapper.archive.Archive._make_archive')
     @mock.patch('fs_uae_wrapper.base.Base._run_emulator')
     @mock.patch('fs_uae_wrapper.base.Base._kickstart_option')
     @mock.patch('fs_uae_wrapper.base.Base._copy_conf')
     @mock.patch('fs_uae_wrapper.base.Base._load_save')
     @mock.patch('fs_uae_wrapper.base.Base._extract')
-    def test_run(self, extr, load, copy, kick, run, march, mkdtemp):
+    def test_run(self, extr, load, copy, kick, run, march, which, mkdtemp):
 
         extr.return_value = False
         load.return_value = False
@@ -55,6 +62,7 @@ class TestArchive(TestCase):
         kick.return_value = False
         run.return_value = False
         march.return_value = False
+        which.return_value = 'rar'
 
         arch = archive.Archive('Config.fs-uae', utils.CmdOption(), {})
         self.assertFalse(arch.run())
diff --git a/tests/test_base.py b/tests/test_base.py
index 287eb5f..c2d11a8 100644
--- a/tests/test_base.py
+++ b/tests/test_base.py
@@ -240,7 +240,10 @@ class TestBase(TestCase):
                             'wrapper_archiver': '7z'}
         self.assertTrue(bobj._validate_options())
 
-    def test_run_clean(self):
+    @mock.patch('fs_uae_wrapper.path.which')
+    def test_run_clean(self, which):
+
+        which.return_value = 'rar'
 
         bobj = base.Base('Config.fs-uae', utils.CmdOption(), {})
         bobj.all_options = {}
diff --git a/tests/test_cd32.py b/tests/test_cd32.py
index 240a75f..4909c4d 100644
--- a/tests/test_cd32.py
+++ b/tests/test_cd32.py
@@ -11,7 +11,10 @@ from fs_uae_wrapper import utils
 
 class TestCD32(TestCase):
 
-    def test_validate_options(self):
+    @mock.patch('fs_uae_wrapper.path.which')
+    def test_validate_options(self, which):
+
+        which.return_value = None
 
         acd32 = cd32.CD32('Config.fs-uae', utils.CmdOption(), {})
         self.assertFalse(acd32._validate_options())
@@ -22,17 +25,23 @@ class TestCD32(TestCase):
         acd32.all_options['wrapper_archive'] = 'fake.tgz'
         self.assertFalse(acd32._validate_options())
 
+        acd32.all_options['wrapper_archiver'] = 'rar'
+        self.assertFalse(acd32._validate_options())
+
+        which.return_value = 'unrar'
         acd32.all_options['wrapper_archiver'] = 'rar'
         self.assertTrue(acd32._validate_options())
 
     @mock.patch('tempfile.mkdtemp')
+    @mock.patch('fs_uae_wrapper.path.which')
     @mock.patch('fs_uae_wrapper.base.Base._save_save')
     @mock.patch('fs_uae_wrapper.base.Base._run_emulator')
     @mock.patch('fs_uae_wrapper.base.Base._kickstart_option')
     @mock.patch('fs_uae_wrapper.base.Base._load_save')
     @mock.patch('fs_uae_wrapper.base.Base._copy_conf')
     @mock.patch('fs_uae_wrapper.base.Base._extract')
-    def test_run(self, extr, cconf, lsave, kick, runemul, ssave, mkdtemp):
+    def test_run(self, extr, cconf, lsave, kick, runemul, ssave, which,
+                 mkdtemp):
 
         extr.return_value = False
         cconf.return_value = False
@@ -40,6 +49,7 @@ class TestCD32(TestCase):
         kick.return_value = {}
         runemul.return_value = False
         ssave.return_value = False
+        which.return_value = 'unrar'
 
         acd32 = cd32.CD32('Config.fs-uae', utils.CmdOption(), {})
         self.assertFalse(acd32.run())