diff --git a/tests/scripts/depends.py b/tests/scripts/depends.py
index 09e14c4..b77a2cf 100755
--- a/tests/scripts/depends.py
+++ b/tests/scripts/depends.py
@@ -120,7 +120,7 @@
         conf.set(option, value)
     return True
 
-def set_reference_config(conf, options, colors):
+def set_reference_config(conf, colors):
     """Change the library configuration file (mbedtls_config.h) to the reference state.
 The reference state is the one from which the tested configurations are
 derived."""
@@ -128,8 +128,6 @@
     log_command(['config.py', 'full'])
     conf.adapt(config.full_adapter)
     set_config_option_value(conf, 'MBEDTLS_TEST_HOOKS', colors, False)
-    if options.unset_use_psa:
-        set_config_option_value(conf, 'MBEDTLS_USE_PSA_CRYPTO', colors, False)
 
 class Job:
     """A job builds the library in a specific configuration and runs some tests."""
@@ -159,9 +157,9 @@
         else:
             log_line('starting ' + self.name, color=colors.cyan)
 
-    def configure(self, conf, options, colors):
+    def configure(self, conf, colors):
         '''Set library configuration options as required for the job.'''
-        set_reference_config(conf, options, colors)
+        set_reference_config(conf, colors)
         for key, value in sorted(self.config_settings.items()):
             ret = set_config_option_value(conf, key, colors, value)
             if ret is False:
@@ -431,7 +429,7 @@
     """Run the specified job (a Job instance)."""
     subprocess.check_call([options.make_command, 'clean'])
     job.announce(colors, None)
-    if not job.configure(conf, options, colors):
+    if not job.configure(conf, colors):
         job.announce(colors, False)
         return False
     conf.write()
@@ -514,9 +512,6 @@
         parser.add_argument('--make-command', metavar='CMD',
                             help='Command to run instead of make (e.g. gmake)',
                             action='store', default='make')
-        parser.add_argument('--unset-use-psa',
-                            help='Unset MBEDTLS_USE_PSA_CRYPTO before any test',
-                            action='store_true', dest='unset_use_psa')
         parser.add_argument('tasks', metavar='TASKS', nargs='*',
                             help='The domain(s) or job(s) to test (default: all).',
                             default=True)