diff --git a/clib/clib_mininet_test_main.py b/clib/clib_mininet_test_main.py
index 926eaa057..0864c97b4 100755
--- a/clib/clib_mininet_test_main.py
+++ b/clib/clib_mininet_test_main.py
@@ -582,7 +582,7 @@ def run_single_test_suites(debug, root_tmpdir, resultclass, single_tests, retrie
             sys.excepthook = oldexcepthook
         else:
             for _ in range(retries):
-                test_results = single_runner.run(single_tests)
+                test_results = single_runner.run(copy.deepcopy(single_tests))
                 if all_tests_successful([test_results]):
                     break
             results.append(test_results)